adj · noun · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/ɪnˈsɒm.ni.æk/
US:Recorded audio is listed in the source snapshot.
rhymes with -æk
CMU ARPABET:IH2 N S AA1 M N IY0 AE2 K
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Suffering from or pertaining to insomnia.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
One who suffers an inability or difficulty sleeping; a sufferer from insomnia.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adjective satellite
Meaning 3
experiencing or accompanied by sleeplessness- Shakespeare
Definition source: Princeton WordNet 3.0
Examples
insomniac old people
insomniac nights
lay sleepless all night
twenty watchful, weary, tedious nights
Meaning relationships
Synonyms: sleepless, watchful
Antonyms: none provided
4
noun
Meaning 4
someone who cannot sleep
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
