Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

sleepy

play
adjective \ˈslē-pē\

Simple Definition of sleepy

  • : tired and ready to fall asleep

  • : quiet and not active or busy

Source: Merriam-Webster's Learner's Dictionary

Full Definition of sleepy

sleepier

sleepiest

  1. 1a :  ready to fall asleepb :  of, relating to, or characteristic of sleep

  2. 2 :  sluggish as if from sleep :  lethargic; also :  having little activity <a sleepy coastal village>

  3. 3 :  sleep-inducing

sleepily

play \-pə-lē\ adverb

sleepiness

play \-pē-nəs\ noun

Examples of sleepy in a sentence

  1. She felt sleepy and went to bed.

  2. <the sleepy children were carried up to bed>



13th Century

First Known Use of sleepy

13th century

Rhymes with sleepy


SLEEPY Defined for Kids

sleepy

play
adjective \ˈslē-pē\

Definition of sleepy for Students

sleepier

sleepiest

  1. 1 :  ready to fall asleep :  drowsy

  2. 2 :  not active, noisy, or busy <a sleepy town>

sleepiness

noun



Medical Dictionary

sleepy

play
adjective \ˈslē-pē\

Medical Definition of sleepy

sleepier

;

sleest

  1. :  ready to fall asleep

sleepiness

\-pē-nəs\play noun




Seen and Heard

What made you want to look up sleepy? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

prophetic or oracular

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

confounded-person

Which is a synonym of indolent?

lazy philistine melancholy frenetic
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ