vagary
1. [ noun ] an unexpected and inexplicable change in something (in a situation or a person's behavior, etc.)
Examples:

"the vagaries of the weather" "his wealth fluctuates with the vagaries of the stock market" "he has dealt with human vagaries for many years"

Related terms: change
2. [ noun ] a sudden desire
Synonyms: impulse whim caprice
Examples:

"he bought it on impulse"

Related terms: desire
Similar spelling:   Vassar
  Vaccaro
  Vaccaria
  Vajra
  vasari