insincere (adj.)

• adulatory
• affected
• ambidextrous
• artful
• artificial
• bland
• buttery
• calculating
• casuistic
• complimentary
• courtly
• crafty
• crooked
• cunning
• deceitful
• deceptive
• dishonest
• disingenuous
• double
• double-dealing
• duplicitous
• empty
• evasive
• faithless
• fallacious
• false
• fawning
• flattering
• foxy
• fulsome
• goody
• goody-goody
• gushing
• histrionic
• holier-than-thou
• hollow
• honeyed
• hypocritical
• illusive
• insinuating
• jesuitic
• la-di-da
• lying
• mannered
• mealymouthed
• mendacious
• obsequious
• oily
• overdone
• overrefined
• perfidious
• pharisaic
• pietistic
• pious
• plausible
• pretentious
• sanctified
• sanctimonious
• scheming
• self-righteous
• shifty
• slick
• slimy
• slippery
• sly
• smarmy
• smooth
• smooth-spoken
• smooth-tongued
• soapy
• sophistic
• sophistical
• specious
• stagy
• sycophantic
• theatrical
• treacherous
• tricky
• two-faced
• unctuous
• underhanded
• unnatural
• untruthful
• vulpine
• wily