Have you ever waited for someone and thought, “It feels like forever!” That feeling of long periods of time isn’t just something we experience—it’s something English speakers express with colorful idioms.
Idioms are phrases whose meanings aren’t obvious from the words themselves, and they add life, humor, and emotion to language. Using them makes your speech sound more natural and fluent.
Imagine this: Anna hasn’t seen her best friend since high school. She finally meets her at a café after ten years. She exclaims, “Wow, it’s been ages!” Her friend laughs, feeling the warmth of connection through a simple idiom.
Idioms for long periods of time are particularly useful in daily conversations, storytelling, writing, and even professional emails. They help you express impatience, nostalgia, or even exaggeration in ways plain English can’t.
In this guide, you’ll discover 16+ idioms, grouped by context and intensity, with examples, mini stories, and tips to use them like a native speaker.
Fun Fact / Trivia
Did you know? Many English idioms about time, like “since the cows came home”, originated from agricultural life centuries ago.
Farmers literally waited for cows to return from grazing in the fields—sometimes all day! Today, we use these expressions metaphorically, but the colorful imagery has lasted for generations.
Idioms for Long Time: Grouped by Context & Emotion
1. Daily Life / Mild Expressions
Ages – It’s been ages since we last met.
Used casually to show long absence or time. Perfect for friends or family.
For donkey’s years – I’ve lived in this neighborhood for donkey’s years.
A playful British idiom. Sounds humorous, but it expresses very long duration.
Since forever – I’ve known her since forever.
Modern and informal; mostly spoken.
Dialogue Example:
Tom: “How long have you had that old bike?”
Jerry: “Oh, since forever! It’s a classic.”
2. Stressed / Frustrated Situations
Till the cows come home – You can argue about it till the cows come home, I won’t change my mind.
Shows a long, possibly endless wait. Origin: British farming life.
In a coon’s age – I haven’t seen him in a coon’s age.
Informal, older American idiom. Slightly humorous, often nostalgic.
Mini cultural note:
“Till the cows come home” is often used to add humor in frustration. Native speakers might laugh while complaining.
3. Heartbroken / Nostalgic Expressions
Since time immemorial – These traditions have been around since time immemorial.
Formal, literary. Perfect for essays or storytelling.
Forever and a day – I’ve been waiting for your reply forever and a day!
Romantic or exaggerated; emotional tone.
Dialogue Example:
Lucy: “I feel like I’ve been waiting forever for this moment.”
Mark: “Well, forever and a day doesn’t seem that long when you’re here.”
4. Workplace / Professional Settings
A long haul – This project is going to be a long haul.
Indicates a long and challenging task. Suitable for meetings or emails.
A while back – We discussed this a while back.
Polite, professional; softens the sense of time lapse.
Table: Emotional Scale for Workplace Idioms
| Idiom | Intensity | Example | Usage context |
|---|---|---|---|
| A while back | Mild | “I emailed you a while back.” | Professional emails |
| Long haul | Moderate | “Preparing for the audit is a long haul.” | Projects & meetings |
| Ages | Strong | “We haven’t updated the software in ages.” | Casual office chat |
5. Literature / Storytelling
Eons – Dragons had slept for eons before the hero arrived.
Very formal or poetic. Often used in fantasy or science writing.
An eternity – She waited an eternity for the letter.
Adds dramatic flair. Common in novels or storytelling.
Mini cultural note:
Authors use these idioms to create timeless imagery. “Eons” conveys cosmic or historical scale, while “an eternity” is emotional and relatable.
6. Funny / Creative Twists
Until the fat lady sings – We won’t know who wins until the fat lady sings.
Humorous idiom from opera. Means: don’t assume the outcome too early.
Since the moon was new – I haven’t played basketball since the moon was new.
Exaggerated and playful; mostly creative spoken English.
Exercises / Practice Sentences
Fill in the blanks with appropriate idioms from above:
- I haven’t visited my hometown __________.
- The meeting will be a __________, so be prepared.
- We can debate this __________, but I won’t budge.
- These traditions have existed __________.
- I felt like I was waiting __________ for the bus!
(Answers: 1. in a coon’s age, 2. long haul, 3. till the cows come home, 4. since time immemorial, 5. forever and a day)
How to Use Idioms in Daily Life
- Speaking: Add natural flow in conversation, but avoid overloading sentences.
- Writing: Use sparingly in essays, stories, or emails to engage the reader.
- Professional: Stick to mild, neutral idioms like a while back or long haul. Avoid overly casual ones like donkey’s years.
Common Mistakes Learners Make
- Using idioms literally: “I waited since forever” sounds odd; use “I’ve known her since forever.”
- Overusing idioms in formal writing.
- Confusing intensity: ages ≈ casual; since time immemorial ≈ formal.
- Mispronunciation of older idioms: coon’s age (say “koon’s age”).
- Forgetting context: Some idioms are British, some American—choose appropriately.
FAQ
1: Can I use idioms in formal writing?
Yes, but only the formal ones like since time immemorial or an eternity. Avoid casual phrases like donkey’s years.
2: Are these idioms understood globally?
Most are recognized in English-speaking countries, but some (like in a coon’s age) may be unfamiliar outside the US.
3: How can idioms improve my IELTS speaking score?
Using idioms naturally shows fluency and range, which examiners appreciate. Pair idioms with examples for clarity.
4: Can I use idioms in emails?
Yes, but stick to mild, professional ones: a while back, long haul.
5: Do idioms sound outdated?
Some older idioms are literary (since time immemorial), while playful ones (donkey’s years) are still popular in casual speech.
Conclusion
Idioms for long time add color, emotion, and authenticity to your English. From casual chats with friends to professional emails or storytelling, knowing which idiom to use—and when—can make your English sound natural and confident.
Try sprinkling a few into your daily conversations and notice how native speakers respond—they often smile or nod knowingly.
Remember, practice is key: read, listen, and speak! By learning these 16+ idioms and understanding their context, you’re not just memorizing phrases—you’re thinking and speaking like a native. So, start small, have fun, and make idioms part of your English toolkit.
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.
