Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “what's the big idea?”

what's the big idea?

informal
used to ask someone why they have done something annoying: What's the big idea? I was watching that programme!
(Definition of what's the big idea? from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
Browse related topics

You are looking at an entry to do with Expressions of anger, but you might be interested in these topics from the Anger topic area:

Add Cambridge dictionaries to your browser to your website

Translations of “what's the big idea?”

Word of the Day

wave

to raise your hand and move it from side to side as a way of greeting someone, telling someone to do something, or adding emphasis to an expression

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

silver splicer noun

November 17, 2014
informal a person who marries in later life Newly retired and now newlywed – rise of the ‘silver splicers’ Reaching pension age becomes a trigger to tie the knot as baby-boomers begin to redefine retirement

Read More