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Idioms for IELTS Speaking (Band 7+)
The Lexical Resource band descriptors mention idiomatic vocabulary from Band 7 upward. This guide explains what that means in practice and gives you natural idioms with exam-style example answers.
Why idioms matter for your Speaking score
IELTS Speaking is scored on four criteria, and one of them — Lexical Resource — is where idioms live. The public band descriptors change in a specific way between Band 6 and Band 7: at Band 6 you need enough vocabulary to discuss topics at length, while at Band 7 the descriptors add less common and idiomatic vocabulary, used with some flexibility. In other words, an examiner listening for Band 7 is listening for some natural idiomatic language. If none appears, Band 7 for Lexical Resource is hard to justify.
The key word is some. Two or three idioms used naturally across a 14-minute test is enough. Ten forced idioms is worse than none.
12 natural idioms with exam-style examples
These are common, current expressions that native speakers actually use in conversation. Each example shows the idiom inside a realistic Speaking answer rather than a bare sentence.
Talking about daily life (Part 1)
- early bird — someone who wakes or arrives early. "I'm definitely an early bird — I do my best studying before 8 a.m."
- cost an arm and a leg — be very expensive. "Rent in my city costs an arm and a leg, so I still live with my parents."
- once in a blue moon — very rarely. "I eat fast food once in a blue moon, maybe when I'm travelling."
- wind down — relax after effort. "In the evening I usually wind down with a podcast."
Describing experiences (Part 2)
- over the moon — extremely happy. "When I got the acceptance email, I was over the moon."
- a blessing in disguise — something bad that turns out well. "Missing that flight was a blessing in disguise, because I met my business partner on the next one."
- out of my comfort zone — beyond what feels familiar. "Presenting in English pushed me out of my comfort zone, but it built my confidence."
- learn the ropes — learn how something is done. "My first month at the company was mostly about learning the ropes."
Discussing abstract topics (Part 3)
- a double-edged sword — something with both benefits and drawbacks. "Social media is a double-edged sword: it connects people but also spreads misinformation."
- on the rise — increasing. "Remote work is on the rise in my country, especially among younger professionals."
- keep up with — stay level with something changing. "Schools struggle to keep up with how quickly technology changes."
- in the long run — over an extended period. "Investing in public transport saves money in the long run."
How to practice idioms so they sound natural
- Learn each idiom with a full example, not a translation. The example teaches you the grammar around the idiom — which preposition follows it, whether it takes an object.
- Attach each idiom to a topic you expect. "A double-edged sword" belongs to technology and social-change questions; "over the moon" belongs to personal stories. Topic-tagging stops you from forcing an idiom where it does not fit.
- Say it aloud three times inside your own sentence. Speaking is a motor skill; an idiom you have only read will not surface under exam pressure.
- Quiz yourself days later. If you cannot recall the idiom from its meaning after a gap, it is not exam-ready yet.
Common mistake: memorizing old-fashioned idioms. Expressions that feel like textbook English often sound unnatural to examiners because native speakers rarely use them in conversation. Prefer current, conversational idioms like the ones above.
Practice this in IELTS Idiom & Vocab Master
The app's Idioms category gives you hundreds of exam-relevant idioms with definitions, example sentences, audio, and illustrations — then quizzes you until they stick. 80 expressions are free to start.