The Collaborative International Dictionary of English v.0.48:

Uncritical \Uncritical\
   See critical.

WordNet (r) 3.0 (2006):

uncritical
    adj 1: marked by disregard for critical standards or procedures;
           "news sources reflected uncritical estimates of the
           number of juvenile addicts" [syn: uncritical,
           noncritical] [ant: critical]
    2: not critical; not tending to find or call attention to
       errors; "a devoted and almost uncritical admirer" [ant:
       critical]

Moby Thesaurus II by Grady Ward, 1.0:

72 Moby Thesaurus words for "uncritical":
   adulatory, blanket, careless, casual, credulous, cursory,
   depthless, doting, easily taken in, easy of belief, fond, fulsome,
   general, hero-worshiping, idolatrous, imprecise, imprudent,
   inaccurate, inclined to believe, indiscreet, indiscriminate,
   indiscriminative, inexact, infatuated, insensitive, lionizing,
   nonjudgmental, offhand, overappreciative, overconfiding,
   overcredulous, overpraising, overtrustful, overtrusting,
   perfunctory, promiscuous, shallow, sketchy, slipshod,
   superstitious, tactless, trustful, trusting, uncensorious,
   unconscientious, uncriticizing, undemanding, undifferentiating,
   undiscreet, undiscriminating, undiscriminative, undoubting,
   unexacting, unfastidious, unfinical, unfussy, unmeticulous,
   unpainstaking, unparticular, unprecise, unpunctilious, unpunctual,
   unreproachful, unrigorous, unscrupulous, unselective, unskeptical,
   unsubtle, unsuspecting, unsuspicious, untactful, wholesale