Most of all, I will miss your good humor and knowing grin.
She closed her eyes against his self- satisfied, knowing grin.
"The two of you stop looking at me with those smug, knowing grins."
He turned to Kelso and gave him a wide, knowing grin.
The two old conspirators greeted each other with knowing grins.
Looking back, she gave him a little knowing grin, which he thought was at his expense, but it was not.
I had to endure a lot of knowing grins.
"When I tried he just smiled his cheeky, knowing grin."
Besides, and here Sean grinned that evil, knowing grin, you need a little time for range practice.
Joe and Shaun traded knowing grins but neither man said anything.