[syn: innocent, innocuous]
The Collaborative International Dictionary of English v.0.48:
Innocuous \In*noc"u*ous\, a. [L. innocuus; in- not + nocuus
   hurtful, fr. nocere to hurt. See Innocent.]
   Harmless; producing no ill effect.
   [1913 Webster]
         A patient, innocuous, innocent man.      --Burton.
   -- In*noc"u*ous*ly, adv. -- In*noc"u*ous*ness, n.
   [1913 Webster]
         Where the salt sea innocuously breaks.   --Wordsworth.
   [1913 Webster]
WordNet (r) 3.0 (2006):
innocuous
    adj 1: not injurious to physical or mental health [ant:
           noxious]
    2: not causing disapproval; "it was an innocuous remark";
       "confined himself to innocuous generalities";
       "unobjectionable behavior" [syn: innocuous,
       unobjectionable]
    3: lacking intent or capacity to injure; "an innocent prank"
       [syn: innocent, innocuous]
Moby Thesaurus II by Grady Ward, 1.0:
35 Moby Thesaurus words for "innocuous":
   benign, harmless, homely, humble, humble-looking, humble-visaged,
   humblest, inglorious, innocent, inoffensive, least, low, lowest,
   lowliest, lowly, mean, modest, nonmalignant, nonpoisonous,
   nontoxic, nonvirulent, plain, poor, sapless, simple, small,
   teachable, undamaging, undistinguished, unhurtful, unimportant,
   uninjurious, unobnoxious, unoffending, unpretentious