Brainwave
Definition 1 of 2

Context
The term 'brainwave' is best used in informal discussions about ideas.

She had a brainwave during the meeting, which was helpful.
Nuance
It conveys positive surprise or excitement about an idea.

His brainwave transformed the project's direction.
Formality
Use it in casual contexts. Avoid in formal writing.

The professor didn't find that idea to be much of a brainwave.
Compare with
insightepiphanyideationinspiratory
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