Thesaurus

sleepiness

noun

Synonyms & Antonyms of sleepiness

the quality or state of desiring or needing sleep
  • the truck driver keeps a thermos of coffee with him to stave off sleepiness

Synonyms for sleepiness

Words Related to sleepiness

Near Antonyms for sleepiness

Antonyms for sleepiness

See the Dictionary Definition 

Keep scrolling for more

Learn More about sleepiness

Cite this Entry

“Sleepiness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sleepiness. Accessed 28 Oct. 2020.

More from Merriam-Webster on sleepiness

Nglish: Translation of sleepiness for Spanish Speakers

Britannica English: Translation of sleepiness for Arabic Speakers

Comments on sleepiness

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

WORD OF THE DAY

Test Your Vocabulary

Namesakes Word Quiz

  • a citrus fruit possibly named after a person
  • Which of the following is a fruit named after a Moroccan seaport?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

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

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!