innoxious

from WordNet (r) 3.0 (2006)

innoxious
    adj 1: having no adverse effect

from The Collaborative International Dictionary of English v.0.48

Innoxious \In*nox"ious\, a. [L. innoxius. See {In-} not, and
   {Noxious}.]
   1. Free from hurtful qualities or effects; harmless;
      innocuous. "Innoxious flames." --Sir K. Digby.
      [1913 Webster]

   2. Free from crime; pure; innocent. --Pope. --
      {In*nox`ious*ly}, adv. -- {In*nox"ious*ness}, n.
      [1913 Webster]