rejoinder (noun) - a response to a question or remark; a reply, often witty or sharp [ri-join-der]
BREAKDOWN: RE- (back) + JOIN- (connect) + -ER (to do)
to rejoin means to come together again; to reunite
See also: juxtaposition
“A cynic once told G. K. Chesterton, the British novelist and essayist, ‘Blessed is he who expecteth nothing, for he shall not be disappointed.’ Chesterton’s rejoinder? ‘Blessed is he who expecteth nothing, for he shall enjoy everything.’” ―Benjamin Graham