Dictionary 1. (v. i.) To smile in a silly, affected, or conceited manner.2. (v. i.) To glimmer; to twinkle. 3. (n.) A constrained, self-conscious smile; an affected, silly smile; a smirk. Thesaurus affected beam bridle bright smile broad grin crack a smile ear-to-ear grin gleaming smile glowing smile grin grinning idiotic grin mince mince it prink sardonic grin self-conscious smile smile brightly smiling smirk stupid grin toothful grin vapid |