sleepless
Sleepless (adj) means Unable to sleep, or marked by an absence of sleep. Example: “She spent a sleepless night worrying about the interview.”
How to use sleepless
Learner’s notesIn plain EnglishWithout sleep — describing a night, or a person who can't sleep.
Word forms
more sleepless comparative, most sleepless superlative
Fill the gap
Can you complete this real example?
She spent a _____ night worrying about the interview.
Etymology
From Old English slǣplēas, literally "sleep" plus "-less" ("without").
Antonyms
Related words
Frequently asked questions
What does “sleepless” mean?
The word “sleepless” means unable to sleep, or marked by an absence of sleep. In plain terms, without sleep — describing a night, or a person who can't sleep.
How do you pronounce “sleepless”?
“Sleepless” is pronounced SLEEP-luhs (/ˈsliːpləs/ in IPA).
How do you use “sleepless” in a sentence?
Here is “sleepless” used in a sentence: “She spent a sleepless night worrying about the interview.”
What is the opposite of “sleepless”?
The opposite of “sleepless” — its antonyms — is wakeless.
What part of speech is “sleepless”?
“Sleepless” is an adjective.
Where does the word “sleepless” come from?
The word “sleepless” comes from Old English. From Old English slǣplēas, literally "sleep" plus "-less" ("without").
Is “sleepless” a common word?
“Sleepless” is an uncommon word in modern English, usually learned at around the A2 level.