unwise

unwise
    adj 1: showing or resulting from lack of judgment or wisdom; "an
           unwise investor is soon impoverished"
    2: not appropriate to the purpose [syn: {inexpedient}, {unwise}]
    

Unwise \Un*wise"\, a. [AS. unw[imac]s. See {Un-} not, and
   {Wise}, a.]
   Not wise; defective in wisdom; injudicious; indiscreet;
   foolish; as, an unwise man; unwise kings; unwise measures.
   [1913 Webster]
    

89 Moby Thesaurus words for "unwise":
      bad, brainless, childish, fatuous, foolish, futile, headless,
      ignorant, ill-advised, ill-considered, ill-contrived, ill-devised,
      ill-gauged, ill-judged, ill-suited, ill-timed, immature, impolitic,
      impractical, improper, imprudent, inadvisable, inane,
      inappropriate, inapt, incongruous, inconsiderate, indiscreet,
      inept, inexpedient, infelicitous, injudicious, inopportune,
      insensate, irrational, lackbrained, lean-minded, lean-witted,
      mal a propos, malapropos, mindless, misadvised, misguided, myopic,
      naive, not bright, of little brain, out of place, pea-brained,
      penny-wise and pound-foolish, pin-brained, reasonless, reckless,
      senseless, shortsighted, slackminded, slackwitted, thoughtless,
      unadvised, unbefitting, unconsidered, undesirable, undiscerning,
      unfit, unfitting, unforeseeing, unfortunate, ungifted, unhappy,
      unintellectual, unintelligent, unmeet, unprofitable, unreasonable,
      unreasoning, unreflecting, unreflective, unseasonable, unseeing,
      unseemly, unsensible, unsound, unsuitable, untalented, unthinking,
      unthoughtful, untimely, witless, wrong