" weak-mindedness "

1: the quality or state of lacking intelligence or quickness of mind;

  * e.g., " ... though the dog that the family took in was friendly and loyal, his weak-mindedness made him quite difficult to train "

•  Synonyms : 

•  boneheadedness,

•  brainlessness,

•  denseness,

•  density,

•  dim-wittedness,

•  doltishness,

•  dopiness,

•  dorkiness,

•  dullness,

•  dumbness,

•  fatuity,

•  foolishness,

•  gormlessness,

•  mindlessness,

•  oafishness,

•  obtuseness,

•  senselessness,

•  simpleness,

•  slowness,

•  stupidity,

•  stupidness,

•  thickness,

•  vacuity,

•  witlessness

•  Antonyms : 

•  braininess,

•  brightness,

•  brilliance,

•  cleverness,

•  intelligence,

•  keenness,

•  quickness,

•  quick-wittedness,

•  sharpness,

•  smartness

1: not having or showing an ability to absorb ideas readily;

  * e.g., " ... I felt a little weak-minded at the beginning of the semester but eventually the class was a breeze "

•  Synonyms : 

•  airheaded,

•  birdbrained,

•  bonehead,

•  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,

•  oafish,

•  obtuse,

•  opaque,

•  pinheaded,

•  senseless,

•  simple,

•  slow,

•  slow-witted,

•  soft,

•  softheaded,

•  stupid,

•  thick,

•  thick-witted,

•  thickheaded,

•  unintelligent,

•  unsmart,

•  vacuous,

•  witless

•  Antonyms : 

•  apt,

•  brainy,

•  bright,

•  brilliant,

•  clever,

•  fast,

•  hyperintelligent,

•  intelligent,

•  keen,

•  nimble,

•  quick,

•  quick-witted,

•  sharp,

•  sharp-witted,

•  smart,

•  supersmart,

•  ultrasmart

2: showing or marked by a lack of good sense or judgment;

  * e.g., " ... a weak-minded decision to use all of their savings to buy lottery tickets in the hopes of hitting the jackpot "

•  Synonyms : 

•  absurd,

•  asinine,

•  balmy,

•  barmy,

•  batty,

•  brainless,

•  bubbleheaded,

•  cockeyed,

•  crackbrained,

•  crackpot,

•  crazy,

•  cuckoo,

•  daffy,

•  daft,

•  dippy,

•  dotty,

•  fatuous,

•  featherheaded,

•  fool,

•  foolish,

•  fruity,

•  gaga,

•  half-baked,

•  half-witted,

•  harebrained,

•  inept,

•  insane,

•  jerky,

•  kooky,

•  loony,

•  loony tunes,

•  lunatic,

•  lunkheaded,

•  mad,

•  meshuga,

•  nonsensical,

•  nutty,

•  preposterous,

•  sappy,

•  screwball,

•  senseless,

•  silly,

•  simpleminded,

•  stupid,

•  tomfool,

•  unwise,

•  wacko,

•  wacky,

•  witless,

•  zany

•  Antonyms : 

•  judicious,

•  prudent,

•  sagacious,

•  sage,

•  sane,

•  sapient,

•  sensible,

•  sound,

•  wise