notion

Meanings

1. 1
   noun

   An idea or belief about something.

   She had no notion of how difficult the journey would be.

2. 2
   noun

   An opinion or personal view.

   He has some strange notions about how the world works.

3. 3
   noun

   A sudden wish to do something, without a clear reason.

   She took a notion to paint the whole room red.

From Latin nōtiō (“a becoming acquainted, a taking cognizance, an examination, an investigation, a conception, idea, notion”), from nōscō (“to know”). Compare French notion. See know.

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