[ slee-pee ]
/ ˈsli pi /

adjective, sleep·i·er, sleep·i·est.

ready or inclined to sleep; drowsy.
of or showing drowsiness.
languid; languorous: a sleepy gesture.
lethargic; sluggish: a sleepy brook.
quiet: a sleepy village.
inducing sleep; soporific: sleepy warmth.

Origin of sleepy

Middle English word dating back to 1175–1225; see origin at sleep, -y1

Related forms

sleep·i·ly, adverbsleep·i·ness, nounun·sleep·y, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sleepy

British Dictionary definitions for sleepy


/ (ˈsliːpɪ) /

adjective sleepier or sleepiest

inclined to or needing sleep; drowsy
characterized by or exhibiting drowsiness, sluggishness, etc
conducive to sleep; soporific
without activity or bustlea sleepy town

Derived Forms

sleepily, adverbsleepiness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012