45+ Idioms About the Past: Speak English Like a Native

The past is full of stories: childhood memories, old friendships, mistakes, happy moments, and experiences that still shape who we are today.

In English, native speakers often talk about these memories with idioms about the past.

Instead of simply saying “something happened a long time ago,” they might say, “That was a long time ago,” “I remember it like it was yesterday,” or “Let’s turn the page.”

Idioms make conversations more natural because they express ideas in a short, colorful way.

They are especially useful when talking about memories, old habits, history, change, regrets, and past experiences.

Imagine meeting an old school friend after ten years. You start talking about your teachers, school trips, and funny mistakes.

Your friend laughs and says, “Wow, those were the days!” Suddenly, the conversation feels warmer and more personal.

That is the power of idioms. They do more than communicate information—they add emotion, personality, and a sense of shared experience.

In this guide, you will learn 45+ useful idioms about the past, with real-life examples, cultural notes, workplace expressions, exercises, and tips for using them naturally.

Fun Fact About Idioms and the Past

Many English idioms come from old customs, jobs, sports, literature, and everyday objects.

For example, “turn back the clock” comes from the simple idea of moving a clock backward. Today, it means wishing you could return to an earlier time.

Similarly, “close the book on something” uses a book as a metaphor for finishing a chapter of life.

English speakers often use time as a physical object. We can “look back,” “move forward,” “turn back,” “leave something behind,” or “turn the page.” These expressions make abstract ideas about time easier to imagine.

45+ Idioms About the Past You Should Know

1. Those were the days

This nostalgic expression is used when remembering a period that you believe was enjoyable or special.

“We used to spend every summer at my grandparents’ house. Those were the days!”

It is usually warm and nostalgic rather than sad.

2. Back in the day

Back in the day means at some time in the past, usually when talking about an earlier period of life.

“Back in the day, people didn’t use smartphones to take photos.”

It is common in casual conversation.

3. Once upon a time

You probably know this phrase from fairy tales. It means at some point in the distant past.

“Once upon a time, this small town was a busy trading center.”

It can also be used humorously:

“Once upon a time, I actually enjoyed waking up at 6 a.m.”

Cultural note

“Once upon a time” is strongly connected with traditional storytelling, especially fairy tales.

4. In days gone by

This means in the past, especially a long time ago.

“In days gone by, families often lived together in large houses.”

It sounds more literary than back in the day.

5. In the old days

A simple and common way to talk about earlier times.

“In the old days, people often wrote letters instead of sending messages.”

Depending on context, it can sound nostalgic or simply historical.

6. A blast from the past

Something old that suddenly reminds you of an earlier time.

“I found my old school notebook. What a blast from the past!”

It is often used for music, photographs, clothes, movies, and people.

7. Like old times

This means doing something in the same enjoyable way as before.

“Let’s meet at our favorite café and catch up like old times.”

It is useful when reconnecting with old friends.

8. Pick up where you left off

To continue something from the point where you stopped before.

“We haven’t worked together for five years, but we quickly picked up where we left off.”

This expression is useful in both personal and professional English.

9. History repeats itself

This means that similar events or patterns can happen again.

“We ignored the warning before, and now we’re making the same mistake. History repeats itself.”

This expression is often used when discussing human behavior or historical events.

10. Learn from the past

Although not as colorful as some idioms, this common expression is extremely useful.

“We should learn from the past instead of repeating the same mistakes.”

It is suitable for everyday, academic, and professional English.

Idioms About Memories and Nostalgia

Some past-related expressions focus on memories rather than historical events.

11. Like it was yesterday

When you remember something very clearly.

“I remember my first day at university like it was yesterday.”

The event may have happened many years ago, but the memory still feels fresh.

12. Bring back memories

Something causes you to remember an earlier time.

“That old song brings back memories of my school days.”

13. Take a trip down memory lane

To spend time remembering past experiences.

“Looking through our old photographs took us down memory lane.”

This is especially common when people look at photographs, school albums, or old videos.

14. Reminisce about the past

Reminisce means to talk or think fondly about past experiences.

“My grandparents love to reminisce about their younger days.”

Quick tip

Reminisce usually has a warm or nostalgic feeling. It is not normally used for traumatic or unpleasant events.

15. Walk down memory lane

This has almost the same meaning as take a trip down memory lane.

“We spent the evening walking down memory lane.”

16. Have a memory like an elephant

This humorous expression means to have a very good memory.

“Don’t ask me what happened ten years ago. Sarah has a memory like an elephant!”

It is informal and often used jokingly.

17. Jog someone’s memory

To help someone remember something.

“Can you jog my memory? What was the name of that restaurant?”

This is extremely natural in everyday English.

18. Ring a bell

If something rings a bell, it sounds familiar.

“The name rings a bell, but I can’t remember where I met him.”

It does not necessarily mean that you remember everything.

Idioms About Leaving the Past Behind

Sometimes we do not want to keep thinking about old problems.

19. Put the past behind you

To stop focusing on something that happened before.

“You made a mistake, but it’s time to put the past behind you.”

20. Leave the past behind

To move forward instead of remaining focused on earlier experiences.

“She decided to leave the past behind and start a new chapter.”

21. Let bygones be bygones

This means deciding not to remain angry about past disagreements.

“We argued last year, but let bygones be bygones.”

Usage warning

This expression can sound slightly old-fashioned, but it is still understood and occasionally used in modern English.

22. Turn the page

To move on from an earlier period or experience.

“After leaving the company, he decided to turn the page and begin something new.”

This is especially common when talking about major life changes.

23. Close the book on something

To consider something finished and move forward.

“After years of discussion, the company finally closed the book on the dispute.”

This expression works particularly well in news and professional writing.

24. Draw a line under something

To decide that something is finished and should not be discussed or worried about anymore.

“We’ve apologized to each other, so let’s draw a line under it.”

This expression is particularly common in British English.

Idioms About Regret and Past Mistakes

Not every memory is happy. English also has plenty of expressions for regrets and mistakes.

25. Hindsight is 20/20

This means it is easier to understand a situation after it has already happened.

“I should have saved more money, but hindsight is 20/20.”

It reminds us that people often understand mistakes more clearly afterward.

26. Live and learn

Used after an experience teaches you something, often following a mistake.

“I forgot to check the train schedule. Live and learn!”

It is casual and often slightly humorous.

27. Learn the hard way

To learn something because you experienced a difficult or unpleasant result.

“I learned the hard way that you should always back up your files.”

28. Have second thoughts

To begin doubting a previous decision.

“After accepting the job, I started having second thoughts.”

Although it does not always refer to the distant past, it is useful when discussing previous decisions.

29. Water under the bridge

Something unpleasant that happened in the past and is no longer worth worrying about.

“We had an argument years ago, but it’s water under the bridge now.”

Important nuance

Do not use this expression when someone is still seriously upset about an event. It suggests that the issue has largely been left behind.

30. There’s no use crying over spilled milk

This means there is no point worrying about something that has already happened and cannot be changed.

“We missed the deadline. There’s no use crying over spilled milk. Let’s fix the problem.”

It is often used to encourage practical thinking.

Emotional Scale: From Mild Nostalgia to Strong Regret

Idioms About Old Habits and Repeated Behavior

31. Old habits die hard

People often find it difficult to change habits they have had for a long time.

“I still check my phone before bed. Old habits die hard.”

This is one of the most useful idioms for talking about behavior.

32. Fall back into old habits

To start doing something you used to do after stopping for a while.

“After a stressful month, I fell back into my old habits.”

33. Go back to square one

To return to the beginning after a plan or attempt fails.

“The computer crashed, and we had to go back to square one.”

This is common in workplace conversations.

34. Back to the drawing board

To start planning again because the previous idea did not work.

“The first design failed the safety test, so we’re back to the drawing board.”

Workplace tip

This is a very natural expression in meetings, project discussions, and business conversations.

35. Once bitten, twice shy

Someone who had a bad experience becomes more careful afterward.

“He lost money on an online deal, so now he’s once bitten, twice shy.”

Professional and Workplace Idioms About the Past

Past experiences often come up at work. Here are several expressions you can use naturally.

36. Learn from past mistakes

“The team needs to learn from past mistakes before starting the next project.”

37. A thing of the past

Something that no longer exists or is no longer common.

“Paper records are becoming a thing of the past in many offices.”

This expression can also describe old technology, customs, or habits.

38. Leave no stone unturned

To make every possible effort to find information or solve a problem.

“The investigators left no stone unturned when reviewing the old records.”

Although it does not exclusively refer to the past, it is useful when researching historical information.

39. Dig up old memories

To cause people to remember experiences from the past.

“The reunion dug up old memories for everyone.”

40. Skeletons in the closet

This idiom refers to embarrassing, secret, or unpleasant things from someone’s past.

“Every organization has a few skeletons in the closet.”

Usage warning

This expression can sound judgmental. Use it carefully, especially when discussing real people’s private lives.

Funny and Creative Past-Related Idioms

English has some wonderfully visual expressions.

41. Go down memory lane

“One old song and suddenly we’re down memory lane.”

42. Turn back the clock

To return to an earlier time or wish that you could.

“Sometimes I wish I could turn back the clock and enjoy my university years again.”

43. The good old days

A phrase used to describe an earlier period that someone remembers fondly.

“My uncle always talks about the good old days.”

It can also be used sarcastically:

“Remember the good old days when the internet took five minutes to load?”

44. A blast from the past

“I found my old game console in the garage. What a blast from the past!”

45. Old school

Something traditional or associated with an earlier style.

“My dad is old school. He still prefers writing notes by hand.”

46. Ancient history

Something that happened so long ago that it no longer seems important.

“Our argument was ancient history by then.”

It does not have to mean actual ancient history.

47. From way back

A casual way to say that something comes from a long time ago.

“That’s a photo of us from way back.”

48. In bygone days

A literary or formal expression meaning in the past.

“In bygone days, travelers often spent weeks crossing the country.”

Idioms Used by Native Speakers in Real Life

Here is how several expressions might sound in an everyday conversation:

Maya: “Do you remember our old school café?”

Tom: “Of course! That place brings back memories.”

Maya: “We should go there again.”

Tom: “Absolutely. Let’s do it like old times.”

Maya: “I can’t believe it has been ten years.”

Tom: “I know. It feels like just yesterday.”

This kind of conversation shows why idioms are useful. Native speakers rarely stop to explain them. They simply use them as part of natural speech.

Idioms in Literature and Storytelling

Past-related idioms work especially well in stories because they help create mood.

A writer can say:

“The old photograph was a blast from the past.”

Or:

“As she opened the dusty box, memories came flooding back.”

Or:

“He decided to turn the page and begin again.”

Expressions such as once upon a time, in days gone by, and in bygone days have a strong storytelling quality. They can make writing sound nostalgic, dramatic, or traditional.

For academic writing, however, use idioms carefully. Formal essays often benefit from direct language instead.

How to Use Idioms About the Past in Daily Life

In speaking

Use casual expressions such as:

• Back in the day
• Those were the days
• A blast from the past
• Ring a bell
• Old habits die hard

In writing

For personal or creative writing, try:

• Take a trip down memory lane
• Like it was yesterday
• Turn the page
• Leave the past behind

At work

Use expressions such as:

• Back to the drawing board
• Go back to square one
• Learn from past mistakes
• Close the book on the issue
• A thing of the past

The key is context. A phrase that sounds natural with friends may sound too casual in a formal report.

Common Mistakes Learners Make

1. Saying “in the past days”

Learners sometimes write:

❌ “In the past days, people wrote letters.”

More natural:

✅ “In the old days, people wrote letters.”

2. Confusing “remember” and “remind”

❌ “That song remembers me of school.”

Correct:

✅ “That song reminds me of school.”

3. Using “water under the bridge” for a current problem

The expression normally suggests that the problem is already in the past.

“We argued yesterday, but it’s water under the bridge now.”

If the argument is still causing anger, another expression may be better.

4. Using informal idioms in every IELTS sentence

Idioms can make your English sound natural, but too many idioms can make writing sound forced.

In IELTS, focus first on clarity, grammar, vocabulary range, and accurate communication.

5. Taking idioms literally

If someone says:

“Let’s turn the page.”

They usually do not mean an actual page.

They mean let’s move forward or start a new stage.

Practice: Complete the Sentences

Choose the best idiom from the box:

those were the days | ring a bell | old habits die hard | water under the bridge | back to the drawing board | down memory lane

1. That name seems familiar. It really __________.
2. We made a mistake with the design, so it’s __________.
3. Looking at our school photos took us __________.
4. I still wake up early on Sundays because __________.
5. We had a disagreement years ago, but it’s __________.
6. We used to spend every summer together. __________!

Answers

1. rings a bell
2. back to the drawing board
3. down memory lane
4. old habits die hard
5. water under the bridge
6. Those were the days

Quick Challenge: Make the Idioms Your Own

Write one sentence with each of these:

• Back in the day
• A blast from the past
• Hindsight is 20/20
• Turn the page
• Old habits die hard

For an extra challenge, tell a short story about something that happened five years ago and use at least three idioms from this article.

This is one of the best ways to move idioms from passive vocabulary into active speech.

FAQs

What are the best idioms for talking about memories?

Some useful choices are take a trip down memory lane, bring back memories, like it was yesterday, jog someone’s memory, ring a bell, and a blast from the past.

Are idioms about the past suitable for IELTS?

Yes, especially in the Speaking test when they fit naturally. Avoid memorizing long lists and forcing idioms into every answer. Accurate and natural English is more important than using an idiom in every response.

Are these idioms used in both American and British English?

Most are widely understood across both varieties. However, some expressions have different levels of popularity. For example, draw a line under something is particularly common in British English.

Are idioms formal or informal?

It depends on the expression. Back in the day and those were the days are conversational, while in bygone days has a more literary tone. Always consider your audience and situation.

Can I translate these idioms directly into my language?

Usually, no. Idioms often have meanings that cannot be understood word for word. Learn the whole expression, meaning, tone, and example sentence together.

Conclusion

The past gives us memories, lessons, mistakes, friendships, and stories—and English has colorful ways to talk about all of them.

From “back in the day” and “those were the days” to “turn the page” and “water under the bridge,” these expressions can make your English sound more natural and expressive.

You do not need to memorize all 48 idioms at once. Start with five that match your everyday conversations, then use them in your own sentences.

With practice, they will become part of your active vocabulary. Ready to bring your English to life? Pick an idiom from this list and use it in a conversation today!

Thomas Reed

Thomas Reed is an experienced English teacher helping students learn with simple, clear lessons.
He focuses on improving speaking, grammar, and confidence through easy daily practice.