Idioms: American vs British — English But Better

These idioms don't belong to one single CEFR level — each one shows its own suggested level, from A2 to C2. A reference list, not a lesson with exercises — browse each group, read the meaning and example, and come back whenever you need one.

American Idioms

Idiom	Meaning	Example
ballpark figure B2	An approximate number or amount, not exact.	Just give me a ballpark figure — I don't need the exact cost yet.
step up to the plate B2	To take responsibility and do what is needed in a difficult situation.	When the manager quit, she stepped up to the plate and led the team herself.
throw someone a curveball C1	To surprise someone with something unexpected and difficult to handle.	The interviewer threw me a curveball with a question I hadn't prepared for.
go to bat for someone C1	To defend or support someone, especially when they're in trouble.	My manager went to bat for me when the client complained unfairly.
touch base B2	To make brief contact with someone, often to share updates.	Let's touch base again next week to see how things are going.
drop the ball B2	To make a mistake by failing to do something you were responsible for.	The team dropped the ball on the deadline, and now the client is upset.
raincheck B1	An offer to do something at a later time because you can't do it now.	Can I take a raincheck on dinner tonight? I'm exhausted.
whole nine yards C1	Everything; the entire thing, with nothing left out.	For their anniversary, he planned a trip, flowers, dinner — the whole nine yards.
monday morning quarterback C2	Someone who criticizes a decision after the event, claiming they would have done better.	It's easy to be a Monday morning quarterback once you already know the outcome.
riding shotgun A2	Sitting in the front passenger seat of a car.	I called riding shotgun before my sister could!

Idiom	Meaning	Example
couch potato A2	A person who spends a lot of time sitting and watching TV instead of being active.	Since he started working from home, he's become a total couch potato.
john hancock B2	Informal: a person's signature.	Just put your John Hancock right here at the bottom of the page.
fender bender B1	A minor car accident causing only small damage.	We were a bit late because of a fender bender on the highway.
red tape C1	Excessive official rules and procedures that slow things down.	It took months to open the business because of all the red tape.
bite off more than you can chew B2	To take on more responsibility than you can handle.	He bit off more than he could chew by agreeing to organize the whole event alone.
sell like hotcakes B2	To sell very quickly and in large quantities.	The new sneakers sold like hotcakes on launch day.
cool as a cucumber B2	Completely calm and relaxed, especially in a stressful situation.	Even during the interview, she stayed cool as a cucumber.
easy as pie A2	Very easy to do.	Don't worry about the recipe, it's easy as pie.
bring home the bacon B2	To earn money to support your family.	Both parents work full-time to bring home the bacon.
have a chip on your shoulder C1	To feel angry or resentful about something, often for a long time, and let it affect your attitude.	He's had a chip on his shoulder ever since he was passed over for the promotion.

Idiom	Meaning	Example
the whole shebang C1	Everything included; the entire thing.	For the wedding, they rented a venue, hired a band, the whole shebang.
give someone the cold shoulder B2	To deliberately ignore someone or treat them in an unfriendly way.	Ever since the argument, she's been giving him the cold shoulder.
cost a pretty penny B2	To be very expensive.	That watch must have cost a pretty penny.
penny for your thoughts B2	Used to ask someone what they are thinking about, especially if they seem quiet.	You've been quiet all evening — penny for your thoughts?
bark up the wrong tree B2	To have the wrong idea about how to achieve something, or to blame the wrong person.	If you think I took your charger, you're barking up the wrong tree.
straight from the horse's mouth C1	Information that comes directly from the person who is the original, most reliable source.	I heard it straight from the horse's mouth — she's leaving the company.
until the cows come home B2	For a very long time, or indefinitely.	You can practice until the cows come home, but you still need proper coaching.
raining cats and dogs A2	Raining very heavily.	We can't go for a walk, it's raining cats and dogs outside.
under a cloud C1	Suspected of doing something wrong, or in a difficult or unhappy situation.	He resigned under a cloud after the financial report came out.
steal someone's thunder C1	To take the attention or credit that should belong to someone else, especially by doing something similar first.	She announced her engagement at my birthday party and totally stole my thunder.

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British Idioms

Idiom	Meaning	Example
bob's your uncle B2	Used to say that something is simple and will work if you follow the instructions.	Just add water, stir, and bob's your uncle — dinner's ready.
taking the mickey C1	To tease or make fun of someone, sometimes unkindly.	Are you taking the mickey? There's no way that's true.
gutted B1	Extremely disappointed or upset.	I was absolutely gutted when we lost the final.
chuffed B1	Very pleased and proud about something.	She was chuffed to bits when she got the job offer.
knackered B1	Extremely tired.	I'm completely knackered after that hike.
gobsmacked B2	Utterly astonished or shocked.	I was gobsmacked when I heard the news.
throw a spanner in the works C1	To do something that stops a plan from succeeding.	The delayed shipment really threw a spanner in the works.
at a loose end B2	Having nothing particular to do; bored or without plans.	I'm at a loose end this weekend if you fancy meeting up.
bits and bobs B1	Small, various items or tasks that don't fit into one clear category.	I need to pick up a few bits and bobs from the shop.
give it some welly C2	To put a lot of energy or force into doing something.	Come on, give it some welly, we're almost at the top!

Idiom	Meaning	Example
lose the plot B2	To stop being able to think clearly, or to behave in a strange, irrational way.	He completely lost the plot when they told him the flight was cancelled.
do a runner B2	To leave suddenly, often to avoid paying for something or facing a problem.	They did a runner without paying the bill.
cheeky A2	Slightly rude or disrespectful in a playful, often amusing way.	She gave a cheeky grin before admitting she'd eaten the last biscuit.
fancy someone A2	To be attracted to or interested in someone romantically.	I think he fancies the new colleague.
have a natter B2	To have a relaxed, informal conversation.	We sat in the garden and had a natter for hours.
be on the blower C1	Informal, dated: to be talking on the telephone.	Hang on, I'm on the blower to the bank.
skive off C2	To avoid work or school without permission, often by pretending to be ill.	He skived off school to go to the concert.
dodgy B1	Not trustworthy or reliable, possibly dishonest or of poor quality.	That website looks a bit dodgy — I wouldn't enter your card details.
faff about C2	To waste time doing unimportant things instead of what you should be doing.	Stop faffing about and get ready, we're going to be late.
sort someone out B1	To help someone solve a problem, or to deal with a difficult person.	Don't worry, I'll sort you out with a ticket.

Idiom	Meaning	Example
splash out B2	To spend a lot of money on something, often as a treat.	They splashed out on a fancy hotel for their anniversary.
tickety-boo C2	Old-fashioned: fine, satisfactory, going well.	Don't worry, everything's tickety-boo over here.
cream crackered C2	Rhyming slang for "knackered": extremely tired.	After that shift, I'm absolutely cream crackered.
brass monkeys C2	Extremely cold weather.	Wrap up warm, it's brass monkeys outside today.
chin wag C1	An informal, friendly chat.	The neighbours were having a good chin wag over the fence.
full of beans B2	Full of energy and enthusiasm.	The kids were full of beans this morning.
donkey's years C1	A very long time.	I haven't seen her in donkey's years.
happy as a clam B2	Extremely happy and content.	He's been happy as a clam since he got the new job.
raining stair-rods C2	Raining extremely heavily, in straight, hard lines.	We got soaked, it was raining stair-rods the whole match.
under the cosh C2	Under a lot of pressure or stress, often from criticism.	The manager has been under the cosh since the poor results came out.

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