infelicitous vs inept

infelicitous and inept both are adjectives.

Word	Noun	Adjective	Verb	Adverb
infelicitous	No	Yes	No	No
inept	No	Yes	No	No

infelicitous (adjective)	inept (adjective)
not appropriate in application; defective	generally incompetent and ineffectual
marked by or producing unhappiness	not elegant or graceful in expression
	revealing lack of perceptiveness or judgment or finesse