unslumbrous

English

Etymology

un- +‎ slumbrous

Adjective

unslumbrous (comparative more unslumbrous, superlative most unslumbrous)

1. (archaic, poetic) sleepless
   • 1818, John Keats, “Book I”, in Endymion: A Poetic Romance, London: […] [T. Miller] for Taylor and Hessey, […], →OCLC, page 1:

     How sickening, how dark the dreadful leisure
     Of weary days, made deeper exquisite,
     By a fore-knowledge of unslumbrous night!