3
tricky(adjective, false, deceitful, lying, untruthful)
3
two-faced(adjective, smooth, false, deceitful, lying)
3
waxy(verb, smooth, unctuousness)
3
wheedling
3
wily(adjective, false, deceitful, lying, untruthful)
2
Janus-faced
2
appreciative(kind, polite, flattering, respectful, admiring)
2
artificial
2
base(adjective, mean, submissive, subservient, sycophantic)
2
boot-licking
2
brown-nosing
2
cringing(adjective, mean, submissive, flattering, subservient)
2
deferential(adjective, flattering, sycophantic, servile, obsequious)
2
designing(adjective, false, deceitful, lying, untruthful)
2
disarming(sycophantic, obsequious)
2
facile(adjective, charming, untrustworthy, superficial, suave)
2
fair-spoken(kind, polite, flattering, respectful, admiring)
2
formalistic
2
foxy
2
fraudulent(adjective, smooth, false, deceitful, lying)
11 years ago|14k views|share |citing 
APASmart Define. (2015). unctuous thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unctuous/thesaurus/synonyms
ChicagoSmart Define. 2015. "unctuous thesaurus" https://smartdefine.org/unctuous/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unctuous thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unctuous/thesaurus/synonyms>.
MLASmart Define. "unctuous thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unctuous/thesaurus/synonyms>