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Synonyms
awake, insomniac, wakeful, wide-awake
Antonyms
asleep, dormant, dozing, napping, resting, sleeping, slumbering, unawakened
Recent Examples on the Web
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sleepless.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
15th century, in the meaning defined at sense 1
More Definitions for sleepless
sleepless
See the full definition for sleepless in the English Language Learners Dictionary
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