"This was the first time," she said in Russian, smiling impishly.
She paused, her eyes very level, then smiled almost impishly.
She smiled impishly, but with a bit of worry, too.
She smiled impishly up at him and became more wanton.
She caught the look in his eye and smiled impishly.
She looked up at him and smiled impishly.
O'Hara was smiling impishly, as if she'd won a major debate.
Quite aware that the great gentlemen were amusing themselves at his expense, he smiled somewhat impishly.
Diana smiled impishly, leaning back to look up at him.
Cecily gave a sigh and then smiled impishly at me.