AI Idiom Explainer
About this tool
What an English phrase actually means, how formal it is, and whether it is British or American.
Idioms are the part of English that dictionaries handle worst. You can know every word in "bite the bullet" and still have no idea what it means, and the register is invisible — some idioms are fine in an essay and some make it sound like a text message.
This gives the meaning, the origin where it is genuinely documented, and — the part learners most need — how formal it is and whether it is chiefly British or American. Register matters more than most people expect: a casual idiom in an exam essay costs marks. Where an origin is disputed or simply unknown, it says so rather than repeating one of the tidy folk etymologies that circulate online and are mostly invented.
How to use
- Enter the idiom or phrase, paste the sentence you saw it in if you have it, and choose whether you want example sentences
- Press Generate and give it a few seconds.
- Copy what you need, or generate again for a different take — every run is fresh.