agrypnotic

English

Etymology

From the Greek word άγρυπνος (ágrypnos) meaning sleepless.

Adjective

agrypnotic (comparative more agrypnotic, superlative most agrypnotic)

1. (medicine) Preventing sleep; causing wakefulness; insomniac.

Noun

agrypnotic (plural agrypnotics)

1. (medicine) A medication that prevents sleep.