Source : Webster's Revised Unabridged Dictionary (1913)

Odious \O"di*ous\, a. [L. odiosus, from odium hatred: cf. F.
   odieux. See {Odium}.]
   1. Hateful; deserving or receiving hatred; as, an odious
      name, system, vice. ``All wickedness will be most
      odious.'' --Sprat.

            He rendered himself odious to the Parliament.
                                                  --Clarendon.

   2. Causing or provoking hatred, repugnance, or disgust;
      offensive; disagreeable; repulsive; as, an odious sight;
      an odious smell. --Milton.

            The odious side of that polity.       --Macaulay.

   Syn: Hateful; detestable; abominable; disgusting; loathsome;
        invidious; repulsive; forbidding; unpopular. --
        {O"di*ous`ly}. adv. -- {O"di*ous*ness}, n.

Source : WordNet®

odious
     adj : unequivocally detestable; "abominable treatment of
           prisoners"; "detestable vices"; "execrable crimes";
           "consequences odious to those you govern"- Edmund Burke
           [syn: {abominable}, {detestable}, {execrable}]