whim
1. [ noun ] a sudden desire
Synonyms: impulse vagary caprice
Examples:

"he bought it on impulse"

Related terms: desire
2. [ noun ] an odd or fanciful or capricious idea
Synonyms: notion whimsey whimsy
Examples:

"the theatrical notion of disguise is associated with disaster in his stories" "he had a whimsy about flying to the moon" "whimsy can be humorous to someone with time to enjoy it"

Related terms: idea
Similar spelling:   whom
  wham
  whammy
  whin
  when