guileless

from WordNet (r) 3.0 (2006)

guileless
    adj 1: free of deceit [syn: {guileless}, {transparent}]

from The Collaborative International Dictionary of English v.0.48

Guileless \Guile"less\, a.
   Free from guile; artless. -- {Guile"less*ly}, adv.
   {Guile"less*ness}, n.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

63 Moby Thesaurus words for "guileless":
      artless, bluff, blunt, born yesterday, candid, childlike,
      confiding, credulous, dependent, depending, direct, frank, ingenu,
      ingenuous, innocent, naive, open, openhearted, outspoken, plain,
      reliant, relying, simple, simplehearted, simpleminded, sincere,
      single-hearted, single-minded, trustful, trusting, trusty,
      unaffected, unassumed, unassuming, unbeguileful, unbeguiling,
      uncalculating, undeceitful, undeceiving, undeceptive, undesigning,
      undisguised, undisguising, undissembling, undissimulated,
      undissimulating, unfeigned, unfeigning, unflattering, unguarded,
      unpretended, unpretending, unreserved, unschooled, unsophisticated,
      unstudied, unsuspecting, unsuspicious, untrimmed, untutored,
      unvarnished, unwary, without suspicion