riposte \rih-POST\, noun:
1. A quick thrust given after parrying an opponent's lunge in fencing.
2. A quick and effective reply by word or act.
1. To make a riposte.
She had an agile, teasing sense of humor that included a sure grasp of the absurd and an instinct for punchy ripostes.
-- Sally Bedell Smith, Diana in Search of Herself