idea

/aɪˈdɪə/ noun

Definition

SUGGESTION [C] › a suggestion or plan: "Why don't we ask George?" "That's a good idea." [+ for + doing sth] Stevens explained his ideas for improving production. [+ to do sth] It was Kate's idea to hire a car.

THOUGHT [U, no plural] › an understanding, thought, or picture in your mind: [+ of + doing sth] Clive soon got used to the idea of having children around the house again. [+ (that)] I don't want them to get the idea that we're not interested.

have no idea › to not know: Beth had no idea where he'd gone.

OPINION [C] › an opinion or belief: My husband and I have very different ideas about school discipline.

AIM [no plural] › the aim or purpose of something: The idea is to give local people a chance to voice their opinions. → See also not have the foggiest (idea)

(Definition of idea noun from the Cambridge Learner's Dictionary © Cambridge University Press)