Answer:

WIT

AnswerCrossword Clue
WITDorothy Parker, for one
WITBrainpower
WITJocularity
WITQuipster
WITDorothy Parker quality
WITGood humor man
WITGroucho trademark
WITOne skilled in repartee
WITKeenness
WITDrollery
WITAd-libber's asset
WITDroll humor
WITWag
WITExpert in banter
WITSmile-inducing speaker
WITDave Barry's faculty
WITArt Buchwald's sine qua non
WITRaconteur's asset
WIT1999 Pulitzer-winning drama
WITSeinfeld asset
WITHumor columnist's gift
WITFeature of Algonquin Round Table discussions
WITTypical Algonquin Round Table member
WITCard
WITReally funny guy
WITVerbal deftness
WITComedian's asset
WITMental quickness
WITReal card
WITRib-tickler
WITSeinfeld, for one
WITSharpness
WITQuickness
WITWilde forte
WITClever sort
WITComic
WIT1999 Pulitzer Prize-winning drama
WITKnack for comebacks
WITRepartee
WITGood humor man?