Alpha stage software — under active development. Data may be incomplete or change without notice.
Thesaurus
Forms
sleepiersleepiestsleepilysleepiness
Derived forms
eepeepynonsleepysleepilysleepinesssleepy-byesleepy-byessleepy-dustsleepyheadsleepytimeunsleepy
Etymology tree
Proto-Germanic *slēpaz
Proto-West Germanic *slāp
Proto-Indo-European *-kos
Proto-Germanic *-gaz
Proto-West Germanic *-g
Proto-West Germanic *slāpag
Old English *slǣpiġ
Middle English slepy
English sleepy
From Middle English slepy, from Old English *slǣpiġ (attested in unslǣpiġ (“sleepless”)), from Proto-West Germanic *slāpag (“sleepy”), equivalent to sleep + -y. Cognate with Saterland Frisian släipich (“sleepy”), West Frisian sliepich (“sleepy”), dialectal Dutch slapig, slepig (“sleepy”), German Low German slapig, släpig, slöpig (“sleepy”), archaic German schlafig (“sleepy”).
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