nonmonotonic vs monotonic

nonmonotonic and monotonic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nonmonotonic	No	Yes	No	No
monotonic	No	Yes	No	No

nonmonotonic (adjective)	monotonic (adjective)
not monotonic	of a sequence or function; consistently increasing and never decreasing or consistently decreasing and never increasing in value
	sounded or spoken in a tone unvarying in pitch