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English

Etymology

From un- +‎ sleepable.

Adjective

unsleepable (comparative more unsleepable, superlative most unsleepable)

  1. Not sleepable; unsuitable for sleeping.
    • 1852, William Allen Drew, Glimpses and gatherings during a voyage and visit to London and the Great Exhibition in the summer of 1851:
      Oh! how the tall masts did slat the rigging like whips; and what an unsleepable noise the flapping sails did make!