" sharp-witted "

1: having or showing a practical cleverness or judgment;

  * e.g., " ... her sharp-witted questions always cut right to the core of the issue "

•  Synonyms : 

•  astute,

•  canny,

•  clear-eyed,

•  clear-sighted,

•  hard-boiled,

•  hardheaded,

•  heady,

•  knowing,

•  savvy,

•  sharp,

•  shrewd,

•  smart

•  Antonyms : 

•  unknowing

2: having or showing quickness of mind;

  * e.g., " ... a TV game show that allows sharp-witted contestants to show their stuff "

•  Synonyms : 

•  alert,

•  brainy,

•  bright,

•  brilliant,

•  clever,

•  exceptional,

•  fast,

•  hyperintelligent,

•  intelligent,

•  keen,

•  nimble,

•  quick,

•  quick-witted,

•  sharp,

•  smart,

•  supersmart,

•  ultrasmart

•  Antonyms : 

•  airheaded,

•  birdbrained,

•  boneheaded,

•  brain-dead,

•  brainless,

•  bubbleheaded,

•  chuckleheaded,

•  dense,

•  dim,

•  dim-witted,

•  doltish,

•  dopey,

•  dorky,

•  dull,

•  dumb,

•  dunderheaded,

•  empty-headed,

•  fatuous,

•  gormless,

•  half-witted,

•  knuckleheaded,

•  lamebrain,

•  lunkheaded,

•  mindless,

•  obtuse,

•  opaque,

•  pinheaded,

•  senseless,

•  simple,

•  slow,

•  slow-witted,

•  soft,

•  softheaded,

•  stupid,

•  thick,

•  thickheaded,

•  thick-witted,

•  unbrilliant,

•  unintelligent,

•  unsmart,

•  vacuous,

•  weak-minded,

•  witless