Source : Webster's Revised Unabridged Dictionary (1913)

Horrid \Hor"rid\, a. [L. horridus. See {Horror}, and cf.
   {Ordure}.]
   1. Rough; rugged; bristling. [Archaic]

            Horrid with fern, and intricate with thorn.
                                                  --Dryden.

   2. Fitted to excite horror; dreadful; hideous; shocking;
      hence, very offensive.

            Not in the legions Of horrid hell.    --Shak.

            The horrid things they say.           --Pope.

   Syn: Frightful; hideous; alarming; shocking; dreadful; awful;
        terrific; horrible; abominable.

Source : WordNet®

horrid
     adj 1: exceedingly bad; "when she was bad she was horrid"
     2: grossly offensive to decency or morality; causing horror;
        "subjected to outrageous cruelty"; "a hideous pattern of
        injustice"; "horrific conditions in the mining industry"
        [syn: {hideous}, {horrific}, {outrageous}]