Answer: wits

AnswerCrossword Clue
WITSShrewdness
WITSClever sorts
WITSMarbles, figuratively
WITSSome manage to live by theirs
WITSCleverness
WITSFunny ones
WITSQuipsters
WITSSmarts
WITSClever ones
WITSMental agility
WITSSome live by them
WITSMarbles, slangily
WITSClever folks
WITSClever crew
WITSComposure
WITSThey're best kept about you
WITSCommon sense.
WITSEpigrammatists.
WITSBright persons.
WITSMental abilities.
witsperson having this
WITSMental keenness
WITSFast thinkers
WITSSanity
WITSMarbles
WITSIntelligence
WITSClever people
WITSMental acuity
WITSWisecrackers
WITSMental faculties
WITSIt's good to keep them about you
WITSFunny fellows
WITSCards
WITSWilde and Twain, e.g.
WITSGood things to keep about you
WITSKeen perception
WITSYou may keep them about you
WITSFunny folks
WITSIngenuity
WITSYou need to keep them about you