" at one's wit's end "

1: a person (as a writer) noted for or specializing in humor;

  * e.g., " ... the pundits and political wits will get a lot of mileage out of the senator's latest gaffe "

•  Synonyms : 

•  card,

•  comedian,

•  comic,

•  droll,

•  farceur,

•  funnyman,

•  gagger,

•  gagman,

•  gagster,

•  humorist,

•  jester,

•  joker,

•  jokester,

•  wag

•  Antonyms : 

•  imprudence,

•  indiscretion

2: the ability to make intelligent decisions especially in everyday matters;

  * e.g., " ... he doesn't even have the wit to know when to come in out of the rain "

•  Synonyms : 

•  common sense,

•  discreetness,

•  discretion,

•  gumption,

•  horse sense,

•  levelheadedness,

•  nous,

•  policy,

•  prudence,

•  sense,

•  sensibleness,

•  wisdom

•  Antonyms : 

•  dementia,

•  derangement,

•  insanity,

•  lunacy,

•  madness,

•  mania,

•  unreason

3: the normal or healthy condition of the mental abilities;

  * e.g., " ... scared out of her wits "

•  Synonyms : 

•  daylights,

•  head,

•  marbles,

•  mind,

•  reason,

•  saneness,

•  sanity

•  Antonyms : 

• (N/A)