knowing smile

• smirkPleased, superior smile
• grinBroad, toothy smile
• winkBrief one-eyed closure
• slyCleverly deceptive
• knowingPossessing awareness or insight

glance · secret · mischievous · coy · twinkle · conspiratorial · amused · hint · playful · subtle · lips · eyes · understanding · complicit · shrewd · cryptic · satisfied · arch

• smilesgrin, beam, smirk, simper, warm smile