libelous vs denigrative

libelous and denigrative both are adjectives.

Word	Noun	Adjective	Verb	Adverb
libelous	No	Yes	No	No
denigrative	No	Yes	No	No

As adjectives, libelous and denigrative are synonyms defined as:

libelous and denigrative: (used of statements) harmful and often untrue; tending to discredit or malign

Other synonyms of libelous include calumniatory, calumnious, defamatory, denigrating, denigratory, libellous, slanderous.

libelous (adjective)	denigrative (adjective)
(used of statements) harmful and often untrue; tending to discredit or malign	(used of statements) harmful and often untrue; tending to discredit or malign