repartee

Many persons must laugh when a great person or an acknowledged wit says a clever thing, such as a smart repartee, or a really good pun.

The humor of my proposition appealed more strongly to Miss Trevor than I had looked for, and from that time forward she became her old self again;[…]. Our table in the dining-room became again the abode of scintillating wit and caustic repartee, Farrar bracing up to his old standard, and the demand for seats in the vicinity rose to an animated competition.