1. the quality of being excessively flattering or ingratiating in a way that seems insincere

Examples

• The politician’s smarminess made voters question his motives.
• She was put off by the salesman’s obvious smarminess.
• His smarminess during the interview didn’t fool anyone.
• The smarminess of his compliments made her uncomfortable.
• Despite his smarminess, he managed to win over some supporters.
• The critic noted the smarminess in the actor’s performance.