[syn: insomniac, sleepless, watchful]
WordNet (r) 3.0 (2006):
insomniac
    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]
    n 1: someone who cannot sleep [syn: insomniac, sleepless
         person]
Moby Thesaurus II by Grady Ward, 1.0:
20 Moby Thesaurus words for "insomniac":
   alertness, all-night vigil, consciousness, insomnia, insomnious,
   insomnolence, insomnolency, lidless vigil, restless, restlessness,
   sentience, sleepless, sleeplessness, slumberless,
   tossing and turning, unsleeping, vigil, wake, wakeful,
   wakefulness