"Sharp wit" refers to a person's ability to think quickly and cleverly, often using humor or clever observations in conversations or situations. Full definition
The script is full of sharp wit with strong writing for each character. (paulstriptothemovies.com)
It doesn't stay that way for long and we're treated to a scene full of thought provoking insight delivered with razor sharp wit. (flickeringmyth.com)
An adaptation of a British series of the same name, Getting On relied on subtle humor and sharp wit rooted in unexpected emotion that brought tears of joy and sadness. (etonline.com)