sleepless

from WordNet (r) 3.0 (2006)
sleepless
    adj 1: experiencing or accompanied by sleeplessness; "insomniac
           old people"; "insomniac nights"; "lay sleepless all
           night"; "twenty watchful, weary, tedious nights"-
           Shakespeare [syn: {insomniac}, {sleepless}, {watchful}]
    2: always watchful; "to an eye like mine, a lidless watcher of
       the public weal"- Alfred Tennyson [syn: {lidless},
       {sleepless}]
    
from The Collaborative International Dictionary of English v.0.48
Sleepless \Sleep"less\, a.
   1. Having no sleep; wakeful.
      [1913 Webster]

   2. Having no rest; perpetually agitated. "Biscay's sleepless
      bay." --Byron.
      [1913 Webster] -- {Sleep"less*ly}, adv. --
      {Sleep"less*ness}, n.
      [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
123 Moby Thesaurus words for "sleepless":
      Argus-eyed, agile, alert, alive, all ears, all eyes, ardent,
      assiduous, attentive, aux aguets, awake, bright, constant,
      continuing, custodial, diligent, disturbed, dogged, eagle-eyed,
      enduring, energetic, faithful, fervent, guarded, hard, hardworking,
      hawk-eyed, immutable, inalterable, indefatigable, indomitable,
      industrious, insistent, insomniac, insomnious, invincible, keen,
      keen-eyed, laborious, lasting, lidless, loyal, never idle,
      never-tiring, nimble, observant, obstinate, on guard, on the,
      on the alert, on the ball, on the job, on the lookout,
      on the watch, open-eyed, patient, patient as Job, permanent,
      perseverant, persevering, persistent, persisting, pertinacious,
      plodding, plugging, preoccupied, prompt, prudent, qui vive, quick,
      rapt, ready, relentless, resolute, restless, sedulous, sharp,
      sharp-eyed, single-minded, slogging, slumberless, smart, stable,
      steadfast, steady, strenuous, stubborn, tenacious, tireless,
      unabating, unblinking, unconquerable, undaunted, undiscouraged,
      undrooping, unfailing, unfaltering, unflagging, unflinching,
      unintermitting, uninterrupted, unnodding, unrelaxing, unrelenting,
      unremitting, unsleeping, unsparing, unswerving, untiring,
      unwavering, unwearied, unwearying, unwinking, utterly attentive,
      vehement, vigilant, wakeful, wary, watchful, weariless, wide-awake,
      with open eyes, zealous

    

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