" foolishly "

1: as in insanely, crazily;

•  Synonyms : 

•  crazily,

•  insanely,

•  self-confidently,

•  brashly,

•  brazenly,

•  foolhardily,

•  heedlessly,

•  hotheadedly,

•  impetuously,

•  imprudently,

•  impulsively,

•  incautiously,

•  overconfidently,

•  rashly,

•  recklessly,

•  thoughtlessly,

•  wildly,

•  adventurously,

•  audaciously,

•  daringly,

•  hardily,

•  venturesomely,

•  venturously,

•  hastily,

•  precipitately,

•  spiritedly,

•  spunkily,

•  stoutly,

•  determinedly,

•  firmly,

•  gamely,

•  grittily,

•  pluckily,

•  resolutely,

•  boldly,

•  bravely,

•  courageously,

•  dauntlessly,

•  doughtily,

•  fearlessly,

•  gallantly,

•  gutsily,

•  heroically,

•  intrepidly,

•  manfully,

•  stalwartly,

•  stoutheartedly,

•  valiantly,

•  valorously

•  Antonyms : 

•  cowardly,

•  cravenly,

•  fearfully,

•  pusillanimously,

•  spinelessly,

•  spiritlessly,

•  timorously,

•  diffidently,

•  mousily,

•  shyly,

•  skittishly,

•  timidly,

•  anxiously,

•  apprehensively,

•  nervously,

•  carefully,

•  cautiously,

•  heedfully,

•  prudently

2: as in unwisely;

•  Synonyms : 

•  unwisely,

•  undesirably,

•  unsatisfactorily,

•  inadequately,

•  insufficiently,

•  extraneously,

•  irrelevantly,

•  meaninglessly,

•  pointlessly,

•  senselessly,

•  fallibly,

•  imperfectly,

•  misguidedly,

•  amiss,

•  erroneously,

•  faultily,

•  improperly,

•  inaccurately,

•  inappropriately,

•  inaptly,

•  incorrectly,

•  mistakenly,

•  unsuitably,

•  wrongly

•  Antonyms : 

•  appropriately,

•  aptly,

•  correctly,

•  fittingly,

•  properly,

•  right,

•  rightly,

•  suitably,

•  well,

•  infallibly,

•  perfectly,

•  germanely,

•  meaningfully,

•  pertinently,

•  relevantly,

•  sensibly,

•  acceptably,

•  adequately,

•  satisfactorily,

•  sufficiently,

•  prudently,

•  sagely,

•  wisely

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

  * e.g., " ... foolish people who thought that the world would end in the year 2000 "

•  Synonyms : 

•  absurd,

•  asinine,

•  balmy,

•  barmy,

•  batty,

•  brainless,

•  bubbleheaded,

•  cockeyed,

•  crackpot,

•  crackbrained,

•  crazy,

•  cuckoo,

•  daffy,

•  daft,

•  dippy,

•  dotty,

•  fatuous,

•  featherheaded,

•  fool,

•  fruity,

•  gaga,

•  half-baked,

•  harebrained,

•  half-witted,

•  inept,

•  insane,

•  jerky,

•  kooky,

•  loony,

•  loony tunes,

•  lunatic,

•  lunkheaded,

•  mad,

•  meshuga,

•  nonsensical,

•  nutty,

•  preposterous,

•  sappy,

•  screwball,

•  senseless,

•  silly,

•  simpleminded,

•  stupid,

•  tomfool,

•  unwise,

•  wacko,

•  wacky,

•  weak-minded,

•  witless,

•  zany

•  Antonyms : 

•  judicious,

•  prudent,

•  sagacious,

•  sage,

•  sane,

•  sapient,

•  sensible,

•  sound,

•  wise

2: conceived or made without regard for reason or reality;

  * e.g., " ... foolish attempts to construct a perpetual motion machine "

•  Synonyms : 

•  absurd,

•  bizarre,

•  crazy,

•  fanciful,

•  fantastic,

•  insane,

•  nonsensical,

•  preposterous,

•  unreal,

•  wild

•  Antonyms : 

•  realistic,

•  reasonable

3: lacking importance;

  * e.g., " ... the current regulations are cluttered with foolish details that are unnecessarily burdensome "

•  Synonyms : 

•  fiddling,

•  frivolous,

•  incidental,

•  inconsequential,

•  inconsiderable,

•  insignificant,

•  little,

•  Mickey Mouse,

•  minor,

•  minute,

•  negligible,

•  nugatory,

•  slight,

•  small,

•  small-fry,

•  trifling,

•  trivial,

•  unimportant

•  Antonyms : 

•  big,

•  consequential,

•  eventful,

•  important,

•  major,

•  material,

•  meaningful,

•  momentous,

•  significant,

•  substantial,

•  unfrivolous,

•  weighty