smarmy – flattering or complimentary in an unpleasant or insincere way
(Pronounced smahr-mee)
To remember the definition of the word smarmy, use the following mnemonic:
"You are so much smarter than me", (smarmy) she said, but it was a complement meant in an insincere way.

Examples of smarmy in a sentence
She always made smarmy remarks about his intelligence.
The manager's smarmy attitude had gotten him into trouble with HR.
He mistook the smarmy comment as a genuine complement.