1. excessively flattering or ingratiating in a way that seems insincere or oily
Usage: informal

Examples

• The smarmy salesman kept complimenting her appearance while trying to sell her an overpriced car.
• His smarmy smile made everyone uncomfortable at the meeting.
• She found his smarmy attempts at flattery completely transparent.
• The politician’s smarmy speech failed to convince the skeptical audience.
• I can’t stand his smarmy attitude when he wants something from us.
• The waiter’s smarmy behavior suggested he was angling for a large tip.