If you’re learning English and already familiar with basics like “break the ice” or “hit the nail on the head,” it’s time to go deeper. Want to sound fluent and professional? Mastering advanced English idioms is your next step.
According to Ahrefs, “advanced English idioms” get over 6,400 monthly searches worldwide with low competition (KD: 25). That’s gold for educators, content creators, and learners alike.
Want to expand your vocabulary with intention? Check out our blog on english synonyms the perfect tool for growing your english words bank alongside essential expressions.
Why Idioms Matter for IELTS and Fluency
Using advanced idioms correctly can boost your IELTS Writing and Speaking scores by 0.5 to 1 full band, especially under the “Lexical Resource” criteria (British Council, 2023).
In high-stakes exams like IELTS, TOEFL, and Cambridge English Proficiency, fluency isn’t just about grammar, it’s about sounding natural. And idioms help you do just that.
📌Tip from the Experts:
“Idioms work like cheat codes for fluency,” says Dr. Rina Matthew, a certified Cambridge tutor and IELTS examiner.
“High scorers don’t just know idioms, they use them when it fits the context.”

5 Idioms That Can Improve Your IELTS Speaking Score
- Bite the bullet
- Under the weather
- Let the cat out of the bag
- Go the extra mile
- Kick the can down the road
Let’s now dive into the full list of idioms with meanings and examples:
20 Advanced English Idioms (With Context & Usage)
- Bite the bullet
→ Tolerate something tough or unpleasant.
Example: I had no choice but to bite the bullet and submit my assignment overnight. - Throw in the towel
→ Admit defeat or quit.
Example: She finally threw in the towel after several failed job interviews. - Speak of the devil
→ The person you’re talking about appears.
Example: Well, speak of the devil, guess who just showed up! - Jump on the bandwagon
→ Follow a popular trend.
Example: He wasn’t into AI tools until everyone jumped on the bandwagon. - Burn the midnight oil
→ Work late into the night.
Example: She burned the midnight oil preparing for her speaking test. - Cut corners
→ Do something cheaply or quickly to save effort.
Example: Don’t cut corners on your portfolio, it’s your brand. - Kick the can down the road
→ Delay facing a problem.
Example: They keep postponing important calls just kicking the issue down the road again. - A bitter pill to swallow
→ An unpleasant truth you have to accept.
Example: Losing the scholarship was a bitter pill to swallow. - Under the weather
→ Feeling sick.
Example: I stayed home today because I was under the weather. - The ball is in your court
→ It’s now your turn to take action.
Example: I’ve sent my part. The ball is in your court now. - Call it a day
→ Stop working for now.
Example: We’ve done enough. Let’s call it a day. - Devil’s advocate
→ Argue for the sake of discussion.
Example: I’m just playing devil’s advocate here—don’t take it personally. - Beat around the bush
→ Avoid getting to the point.
Example: Stop beating around the bush and give me the real story. - Barking up the wrong tree
→ Making a wrong assumption.
Example: If you think I started the rumor, you’re barking up the wrong tree. - Break the bank
→ Be overly expensive.
Example: That online course won’t break the bank—it’s just $25. - Elephant in the room
→ An obvious issue no one wants to mention.
Example: Everyone avoided mentioning the real problem: the budget cut sitting silently between us. - Hit the ground running
→ Start something quickly and effectively.
Example: From day one, she jumped straight into action and took charge. - Read between the lines
→ Understand the hidden meaning.
Example: He never admitted it, but I could read between the lines. - Go the extra mile
→ Do more than expected.
Example: He always goes the extra mile for his team. - Let the cat out of the bag
→ Accidentally reveal a secret.
Example: He let the cat out of the bag about the surprise trip.
Ready to Sound More Fluent, Natural & Impactful?
Enroll in our Advanced Vocabulary for Writers and Creatives course.
Through guided exercises and clear examples, you’ll gain the skills to use idioms naturally and effectively.
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