39 entries under deceitful topic. ×

34
cunning(adjective, sly, sneaky, guile, insidiousness)
27
wily(adjective, sly, crafty, cunning, sneaky)
26
treacherous(adjective, dishonest, sly, tricky, disloyal)
26
tricky(adjective, sly, cunning, guile, insidiousness)
26
crafty(adjective, sly, cunning, sneaky, guile)
24
sly(adjective, cunning, devious, sneaky, guile)
18
guileful(adjective, sneaky, guile, insidiousness, characteristic)
17
dishonest(adjective, characteristic, tricky, sneaky, guile)
17
underhand(adjective, characteristic, cunning, guile)
16
slick(adjective, guile, insidiousness, characteristic, smooth)
15
foxy(adjective, shrewd, sneaky, tricky, characteristic)
15
crooked(adjective, cunning, tricky, sneaky, guile)
14
sneaky(adjective, characteristic, informal, guile, insidiousness)
13
deceptive(adjective, dishonest, guile, insidiousness, characteristic)
13
shifty(adjective, smooth, false, dishonest)
12
devious(adjective, characteristic, sharp, dishonest, cunning)
11
surreptitious(adjective, sneaky, guile, insidiousness, characteristic)
10
smooth(adjective, guile, insidiousness, characteristic, mean)
9
duplicitous(adjective, tricky, sneaky, guile, insidiousness)
9
scheming(adjective, dishonest, shrewd, sly)
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APASmart Define. (2015). insidious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/insidious/thesaurus/synonyms
ChicagoSmart Define. 2015. "insidious thesaurus" https://smartdefine.org/insidious/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, insidious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/insidious/thesaurus/synonyms>.
MLASmart Define. "insidious thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/insidious/thesaurus/synonyms>