noun

idea

idea, thought, concept

I have a good idea.

I have a good idea.

He has no idea what happened.

He has no idea what happened.

((an)) idea ((about/of sth.)) a thought about something I have a good idea about the project.

((have)) no idea to not know or understand at all I have no idea what to do.

Synonyms: thought, concept, notion, plan

From Greek 'idea' (form, pattern), from 'idein' (to see).

When you "see" a solution in your mind, you have an idea.

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