17 entries under unfaithful topic. ×

9
two-timing(adjective, false, improper, fickle, untrue)
8
cheating(adjective, false, improper, untrue, clandestine)
7
illicit(adjective, legal, forbidden)
7
untrue(adjective, false, disloyal, cheating)
6
extracurricular(adjective, fickle, untrustworthy, unprincipled)
6
perfidious(adjective, false, fickle, untrue, untrustworthy)
5
false(adjective, untrue, disloyal, cheating)
5
fickle(adjective, false, untrue, untrustworthy, unprincipled)
4
wandering
3
inconstant(adjective, false, fickle, untrue, untrustworthy)
3
immoral
2
double-crossing(adjective, false, improper, fickle, untrue)
2
moonlighting(adjective, false, improper, fickle, untrue)
2
two-faced(adjective, false, improper, untrue)
2
unchaste(noun, adjective, false, improper, untrue)
1
speedy(adjective, informal)
0
fast and loose
11 years ago|2.5k views|share |citing 
APASmart Define. (2015). adulterous thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/adulterous/thesaurus/synonyms
ChicagoSmart Define. 2015. "adulterous thesaurus" https://smartdefine.org/adulterous/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, adulterous thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/adulterous/thesaurus/synonyms>.
MLASmart Define. "adulterous thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/adulterous/thesaurus/synonyms>