Caprice
WordNet
noun
(1) A sudden desire
"He bought it on an impulse"
WiktionaryText
Etymology
, from , from : from + from , or from
Noun
- An impulsive, seemingly unmotivated notion or action.
- An unpredictable or sudden condition, change, or series of changes.
- A disposition to be impulsive.
- An impulsive change of mind.