English edit

Etymology edit

anti- +‎ sleep

Adjective edit

antisleep (not comparable)

  1. Countering sleep.
    • 1973, Norman D. Sundberg, Leona Elizabeth Tyler, Julian R. Taplin, Clinical psychology; expanding horizons:
      In answer to his inquiry about the nature of the problem, the Major indicated that Ward had been working irregular hours at the installation and had been sleeping very little, keeping himself awake with coffee and antisleep pills.

Anagrams edit