two-timing vs adulterous

two-timing and adulterous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
two-timing	No	Yes	No	No
adulterous	No	Yes	No	No

As adjectives, two-timing and adulterous are synonyms defined as:

Other synonyms of two-timing include cheating.

two-timing (adjective)	adulterous (adjective)
not faithful to a spouse or lover	characterized by adultery
	not faithful to a spouse or lover