CAPRICE
caprice, impulse, whim
(noun) a sudden desire; “he bought it on an impulse”
Source: WordNet® 3.1
Etymology
Noun
caprice (plural caprices)
An impulsive, seemingly unmotivated action, change of mind, or notion.
An unpredictable or sudden condition, change, or series of changes.
A disposition to be impulsive.
(music) A capriccio.
Source: Wiktionary
Ca*price", n. Etym: [F. caprice, It. capriccio, caprice (perh. orig.
a fantastical goat leap), fr. L. caper, capra, goat. Cf Capriole,
Cab, Caper, v. i.]
1. An abrupt change in feeling, opinion, or action, proceeding from
some whim or fancy; a freak; a notion. "Caprices of appetite." W.
Irving.
2. (Mus.)
Definition: See Capriccio.
Syn.
– Freak; whim; crotchet; fancy; vagary; humor; whimsey; fickleness.
Source: Webster’s Unabridged Dictionary 1913 Edition