n. 25B6; adjective
a knowing smile : SIGNIFICANT, meaningful, eloquent, expressive, suggestive; ARCH, sly, mischievous, impish, teasing, playful.
she's a very knowing child : SOPHISTICATED, worldly, worldly-wise, urbane, experienced; knowledgeable, well informed, enlightened; shrewd, astute, canny, sharp, wily, perceptive.
a knowing infringement of the rules : DELIBERATE, intentional, conscious, calculated, wilful, done on purpose, premeditated, preconceived, planned.