3 synonym groups for Insincere

treacherous, deceitful, unfaithful, disloyal, perfidious, insincere, untrustworthy, duplicitous, traitorous, faithless, double-dealing, two-faced, backstabbing, untrue, false, unreliable, fickle, inconstant, unprincipled, unscrupulous, dishonest, mendacious, hypocritical, fraudulent, guileful, cunning, sly, crafty, scheming, conniving, deceptive, misleading, beguiling, cheating, lying, unloyal, recreant, renegade, apostate, turncoat, double-crossing, serpentine, Janus-faced, double-tongued, false-hearted, false-faced, false-minded, false-spirited, false-souled [x]

insincere, deceitful, dishonest, untruthful, false, duplicitous, hypocritical, two-faced, double-dealing, underhanded, shifty, sneaky, tricky, cunning, crafty, sly, mendacious, guileful, perfidious, untrustworthy, misleading, deceptive, fraudulent, phony, hollow, pretentious, artificial, fake, feigned, spurious, specious, dissembling, evasive, equivocating, prevaricating, shamming, bluffing, counterfeit, bogus, pseudo, sham, affected, insidious, treacherous, unfaithful, unreliable, unscrupulous, unprincipled, crooked [x]

hypocritical, deceitful, duplicitous, insincere, two-faced, disingenuous, false, untrustworthy, Janus-faced, perfidious, treacherous, dishonest, backstabbing, double-dealing, unfaithful, traitorous, unreliable, counterfeit, phony, fraudulent, mendacious, shifty, sneaky, underhanded, deceptive, guileful, crafty, sly, cunning, tricky, foxy, serpentine [x]