notion
/ˈnoʊʃən/
noun
- An idea, belief, or opinion about something.
- He rejected the notion that hard work alone guarantees success.
- The notion that money brings happiness is not always true.
- She had a vague notion that the answer was in the book.
- A sudden desire or impulse to do something.
- I had a notion to go for a walk in the rain.
- On a whim, she took a notion to paint her room bright yellow.
- He got a notion to learn the guitar overnight.