Main entry: felicitous
Definition: exhibiting an agreeably appropriate manner or style
Usage: a felicitous speaker
Antonyms: infelicitous
Definition: not appropriate in application; defective
Antonyms: unhappy
Definition: experiencing or marked by or causing sadness or sorrow or discontent
Main entry: felicitous, happy
Definition: marked by good fortune
Usage: a felicitous life; a happy outcome
Antonyms: unfortunate
Definition: not favored by fortune; marked or accompanied by or resulting in ill fortune