Source : Webster's Revised Unabridged Dictionary (1913)

Timid \Tim"id\, a. [L. timidus, fr. timere to fear; cf. Skr. tam
   to become breathless, to become stupefief: cf. F. timide.]
   Wanting courage to meet danger; easily frightened; timorous;
   not bold; fearful; shy.

         Poor is the triumph o'er the timid hare. --Thomson.

   Syn: Fearful; timorous; afraid; cowardly; pusillanimous;
        faint-hearted; shrinking; retiring. -- {Tim"id*ly}, adv.
        -- {Tim"id*ness}, n.

Source : WordNet®

timid
     adj 1: showing fear and lack of confidence [ant: {bold}]
     2: contemptibly timid
     3: lacking self-confidence; "stood in the doorway diffident and
        abashed"; "problems that call for bold not timid
        responses"; "a very unsure young man" [syn: {diffident}, {shy},
         {unsure}]
     4: lacking conviction or boldness or courage; "faint heart
        ne'er won fair lady" [syn: {faint}, {fainthearted}]

timid
     n : people who are fearful and cautious; "whitewater rafting is
         not for the timid" [syn: {cautious}] [ant: {brave}]