Source : Webster's Revised Unabridged Dictionary (1913)

Restless \Rest"less\, a. [AS. restle['a]s.]
   1. Never resting; unquiet; uneasy; continually moving; as, a
      restless child. --Chaucer. ``Restless revolution day by
      day.'' --Milton.

   2. Not satisfied to be at rest or in peace; averse to repose
      or quiet; eager for change; discontented; as, restless
      schemers; restless ambition; restless subjects. ``Restless
      at home, and ever prone to range.'' --Dryden.

   3. Deprived of rest or sleep.

            Restless he passed the remnants of the night.
                                                  --Dryden.

   4. Passed in unquietness; as, the patient has had a restless
      night.

   5. Not affording rest; as, a restless chair. --Cowper.

   {Restless thrush}. (Zo["o]l.) See {Grinder}, 3.

   Syn: Unquiet; uneasy; disturbed; disquieted; sleepless;
        agitated; unsettled; roving; wandering. --
        {Rest"less*ly}, adv.- {Rest"less*ness}, n.