agrypnotic

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English

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Etymology

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From the Greek word άγρυπνος (ágrypnos) meaning sleepless.

Adjective

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agrypnotic (comparative more agrypnotic, superlative most agrypnotic)

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

Noun

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agrypnotic (plural agrypnotics)

  1. (medicine) A medication that prevents sleep.