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insomniac

in·som·ni·ac

insomniac

pronunciation:
ihn sam ni aek
parts of speech:
noun, adjective
features:
Word Parts
part of speech: noun
definition: a person who has chronic difficulty in getting to sleep.
 
part of speech: adjective
definition 1: afflicted with insomnia.
definition 2: of, concerning, or causing insomnia.
Word Parts
The word insomniac contains the following part:
-ac Greek adjective-forming suffix that means in adjectives: of or pertaining to; resembling; in nouns: someone afflicted with;
Show wordsHide wordsMore about this word part:
The suffix -ac attaches to Greek bases ending in the letter "i" to form adjectives and their noun extensions. Many English adjectives ending in -ac are loanwords from Greek via Latin. However, later words such as "dipsomaniac " are new English words modeled on loanwords.