cumbersome vs infelicitous

cumbersome and infelicitous both are adjectives.

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

cumbersome (adjective)	infelicitous (adjective)
not elegant or graceful in expression	not appropriate in application; defective
difficult to handle or use especially because of size or weight	marked by or producing unhappiness