archly
Definitions
In a manner that is playfully or roguishly mischievous.
In a way that suggests knowing or superior amusement.
Examples
She smiled archly at him, knowing full well that he had been caught in his own lie.
He raised an eyebrow archly, questioning whether I truly intended to go through with such a risky plan.
Synonyms
mischievously playfully slyly roguishly impishly wittily teasingly
Antonyms
seriously solemnly gravely earnestly sincerely straightforwardly plainly