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Use "smarmily" in a sentence
"I narrowed my eyes at Nick while he smarmily chewed on a big bite of cake."
"Only James Spader feels at home, smarmily staring everyone down with his "Everything is sex" philosophy and creeping out Jim, who nonetheless thinks he might be a genius."
"Which is to say, he wouldn't say it the way a slick thirtysomething Player capital P played by a bronzed Justin Timberlake would say it: Slowly, deliberately, smarmily, Machiavellian-ly -- a way that is at once inspiring and alarming, as though he were going to charm you into his confidence, hitch his wagon to your star, and then screw you at the first opportunity."