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Definition of insomnia

insomnia

/ɪnˈsɑːm.ni.ə/
in · som · ni · a
Adjective:insomniac
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insomnia Lexical Profile

insomnia Game Scores & Validity

• noun

1

A chronic or acute sleep disorder characterized by persistent difficulty falling asleep, staying asleep, or achieving restorative sleep despite adequate opportunity.

Example

"Stress from her demanding job triggered a bout of severe insomnia that lasted for several weeks."

Synonyms
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Antonyms
View all antonyms for insomnia

• Rhymes for insomnia

• Nearby Words

insolvable
insolvency
insolvent
insomnia
insomniac
insourcing
inspect

Word Origin & Etymology

Borrowed in the early 17th century from Latin insomnia ('sleeplessness'), derived from insomnis ('sleepless'), combining the privative prefix in- ('not') and somnus ('sleep').

Cite this Entry

Wordmom. (2026). Definition of Insomnia. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/insomnia
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