" quick-wittedness "

1: as in smartness, intelligence;

•  Synonyms : 

•  braininess,

•  brightness,

•  brilliance,

•  cleverness,

•  intelligence,

•  keenness,

•  quickness,

•  sharpness,

•  smartness,

•  acumen,

•  alertness,

•  astuteness,

•  discernment,

•  insight,

•  judgment,

•  perception,

•  percipience,

•  perspicacity,

•  sagacity,

•  sageness,

•  sapience,

•  wisdom,

•  wit,

•  logicality,

•  logicalness,

•  rationality,

•  rationalness,

•  reasonableness,

•  soundness,

•  validity

•  Antonyms : 

•  boneheadedness,

•  brainlessness,

•  denseness,

•  density,

•  dim-wittedness,

•  doltishness,

•  dopiness,

•  dorkiness,

•  dullness,

•  dumbness,

•  fatuity,

•  foolishness,

•  gormlessness,

•  mindlessness,

•  oafishness,

•  obtuseness,

•  senselessness,

•  simpleness,

•  slowness,

•  stupidity,

•  stupidness,

•  thickness,

•  vacuity,

•  weak-mindedness,

•  witlessness,

•  feeblemindedness,

•  simplemindedness,

•  absurdity,

•  asininity,

•  balminess,

•  craziness,

•  daftness,

•  dippiness,

•  dottiness,

•  fatuousness,

•  folly,

•  idiocy,

•  inaneness,

•  inanity,

•  insanity,

•  lunacy,

•  madness,

•  nincompoopery,

•  nonsensicalness,

•  nuttiness,

•  preposterousness,

•  silliness,

•  simplicity,

•  wackiness,

•  zaniness

1: having or showing quickness of mind;

  * e.g., " ... the quick-witted child easily figured out the trick to making the toy work "

•  Synonyms : 

•  alert,

•  brainy,

•  bright,

•  brilliant,

•  clever,

•  exceptional,

•  fast,

•  hyperintelligent,

•  intelligent,

•  keen,

•  nimble,

•  quick,

•  sharp,

•  sharp-witted,

•  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