- Idioms cannot be understood word by word — their meaning is completely different from the literal sense.
- The 30 idioms in this guide cover the most common everyday situations: decisions, feelings, time, and relationships.
- Learning idioms in context (in sentences or conversations) is more effective than memorising bare definitions.
- Use idioms in the right register — many are informal and unsuitable for formal writing.
- Hearing idioms repeatedly in films, podcasts, and conversations cements them in long-term memory.
Idioms are fixed expressions whose meaning cannot be deduced from the individual words. "It's raining cats and dogs" has nothing to do with animals — it means it is raining heavily. For ESL learners, idioms present a special challenge because no amount of vocabulary knowledge will help you understand them if you have never encountered them before. The solution is simple exposure: the more idioms you learn and encounter in context, the more naturally you will understand and use them.
The 30 idioms below cover the most important everyday topics and are among the most frequently used in British and international English. Each entry includes the meaning and a natural example sentence.
1. Decisions and Actions
- Bite the bullet — to endure something difficult or unpleasant with courage. "I need to bite the bullet and call the dentist."
- On the fence — undecided, not yet taking a position. "I'm still on the fence about accepting the offer."
- Take the plunge — to make a bold decision after hesitation. "After months of thinking about it, she finally took the plunge and started her own business."
- Go back to the drawing board — to start again from the beginning when something fails. "The prototype didn't work, so we had to go back to the drawing board."
- Jump on the bandwagon — to follow a popular trend or activity. "Every company seems to be jumping on the sustainability bandwagon right now."
- Cut corners — to do something in a quick, cheap way, sacrificing quality. "They cut corners on the building work and now there are problems with the roof."
2. Feelings and Attitudes
- Under the weather — feeling slightly unwell. "I'm a bit under the weather today — I think I'm getting a cold."
- On top of the world — feeling very happy and confident. "He passed all his exams — he's on top of the world right now."
- In two minds — uncertain, finding it hard to decide. "I'm in two minds about whether to move to a new city."
- Over the moon — extremely happy. "She was over the moon when she found out she got the job."
- Fed up with — tired and frustrated by something. "I'm completely fed up with this commute — it takes two hours each way."
- Get cold feet — to become nervous or frightened about doing something you had decided to do. "He had planned to ask her to marry him, but he got cold feet at the last minute."
3. Time and Frequency
- Once in a blue moon — very rarely. "We only see each other once in a blue moon."
- In the nick of time — just in time, before it is too late. "The ambulance arrived in the nick of time."
- Beat around the bush — to avoid getting to the main point. "Stop beating around the bush and just tell me what happened."
- At the drop of a hat — immediately, without hesitation. "She'd travel to the other side of the world at the drop of a hat if there was an adventure to be had."
- Pull an all-nighter — to stay awake all night to work or study. "He pulled an all-nighter to finish the report before the deadline."
Most everyday idioms are informal. Avoid using them in formal academic writing or in official letters. However, they are perfectly appropriate in conversation, emails to colleagues, and most workplace communication. If in doubt about formality, use the literal equivalent instead.
4. Relationships and Communication
- Break the ice — to ease tension in a new social situation. "The team games at the start of the workshop helped to break the ice."
- Hit it off — to immediately like someone. "They hit it off straight away — they talked all evening."
- Pull someone's leg — to joke with someone or tease them. "Are you serious, or are you pulling my leg?"
- Get along like a house on fire — to immediately have a very good relationship. "My sister and my new flatmate get along like a house on fire."
- Give someone the benefit of the doubt — to trust someone even when you are not sure. "He was late again, but I gave him the benefit of the doubt — his train was cancelled."
- See eye to eye — to agree with someone. "We don't always see eye to eye, but we respect each other's opinions."
5. Everyday Situations
- Hit the nail on the head — to describe something exactly correctly. "You've hit the nail on the head — that's precisely the problem."
- A blessing in disguise — something that seems bad but turns out to be good. "Losing that job was a blessing in disguise — I found something much better."
- The ball is in your court — it is now your turn to act or decide. "I've made my offer — the ball is in your court now."
- Spill the beans — to reveal a secret. "Someone spilled the beans about the surprise party!"
- Burn bridges — to permanently damage a relationship or opportunity. "Think carefully before you resign — you don't want to burn your bridges."
- The tip of the iceberg — a small part of a much larger problem. "The complaints we've received are just the tip of the iceberg."
- Miss the boat — to miss an opportunity. "I should have bought that house when I had the chance — I've missed the boat now."
- Throw in the towel — to give up, to admit defeat. "After three failed attempts, she finally threw in the towel."
- Hit the ground running — to start something energetically without needing a warm-up period. "He really hit the ground running in his new role — he had already restructured the team by his second week."
Practise English Idioms
Test your idiom knowledge with LexFizz's free Flash Cards, Quiz, and Matching Pairs exercises.
Explore Exercises →6. Tips for Learning Idioms Effectively
- Learn in context. Always study an idiom in an example sentence that shows how it is used, not just the meaning alone.
- Group by theme. Organise idioms by topic (feelings, decisions, time) to make them easier to remember and retrieve.
- Use them actively. Try to use one new idiom in a sentence or conversation every day. Active production is far more effective than passive recognition.
- Watch films and TV. English films and TV series are full of idioms used naturally. When you hear one you recognise, note it down — the context will cement the meaning.
- Pay attention to register. Many idioms are informal. Learn whether each idiom is appropriate in formal or informal contexts.
Frequently Asked Questions
What does 'bite the bullet' mean?
'Bite the bullet' means to endure a painful or difficult situation with courage and without complaining. It originates from the practice of giving soldiers a bullet to bite during surgery in the days before anaesthesia. Example: "The dentist appointment is tomorrow — I'll just have to bite the bullet and go."
What does 'on the fence' mean?
'On the fence' means undecided or neutral about something, not yet having taken a position or made a decision. Example: "I'm still on the fence about whether to accept the job offer — it's a big decision." The image is of someone sitting on a fence, not yet having come down on either side.
What does 'hit the nail on the head' mean?
'Hit the nail on the head' means to describe something exactly correctly, or to do something in precisely the right way. Example: "You've hit the nail on the head — that's exactly what the problem is." It is used to express strong agreement that someone has identified or articulated something perfectly.
What does 'under the weather' mean?
'Under the weather' means feeling slightly ill, unwell, or not in good health. It is a very common informal expression used when you feel sick but not seriously so. Example: "I'm a bit under the weather today — I think I'm getting a cold. I might work from home." It is often used as a polite way of explaining an absence.
What does 'break the ice' mean?
'Break the ice' means to do or say something to reduce tension or awkwardness in a new social situation, helping people to relax and start communicating more freely. Example: "The games at the start of the workshop really helped to break the ice." It comes from the idea of ships breaking through ice to open up a channel for other ships to follow.
What does 'a blessing in disguise' mean?
'A blessing in disguise' refers to something that seems bad or unfortunate at first but turns out to be good or beneficial in the end. Example: "Losing that job was a blessing in disguise — I found a much better one a month later." It captures the idea that what appears to be a misfortune can actually lead to something positive.
What does 'the ball is in your court' mean?
'The ball is in your court' means that it is now your turn to take action or make a decision. It is a sporting metaphor from tennis. Example: "I've sent them my proposal — the ball is in their court now." It is often used in negotiations or situations where one party has done what they can and is waiting for the other to respond.
What does 'pull someone's leg' mean?
'Pull someone's leg' means to joke with someone or tease them by telling them something untrue. Example: "Are you serious, or are you pulling my leg?" / "He told me he'd won the lottery, but he was just pulling my leg." It is always used in a light-hearted, playful sense — not for serious deception.
What does 'once in a blue moon' mean?
'Once in a blue moon' means very rarely, almost never. Example: "She only visits us once in a blue moon — maybe twice a year." The phrase refers to the rare occurrence of two full moons appearing in a single calendar month. It is always used to emphasise the rarity of an event or action.
How can I learn English idioms more effectively?
The most effective ways to learn idioms are: (1) Learn them in context — read or listen to them in real sentences rather than in isolated lists. (2) Group them by theme (e.g. decision-making, feelings, time) to make them easier to remember. (3) Use them actively — try to use one new idiom in a sentence or conversation each day. (4) Watch English films and TV programmes, where idioms appear naturally and frequently in dialogue.