Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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ihn sam ni
Word Combinations (noun), Word Parts
part of speech: noun
definition: difficulty in getting to sleep, esp. as a persistent problem.
She's generally tired because she suffers from insomnia.
Word Combinations  About this feature
adjective + (n.)insomnia acute, awake, chronic, extreme, fatal, long-term, mental, mild, occasional, persistent, rapid, severe, short-term, transient, tremendous, usual
verb + (n.)insomnia associate, cause, combat, complain, cure, diagnose, ease, experience, induce, prescribe, rebound, relieve, suffer, treat, trigger, vomit
(n.)insomnia + verb blame, decrease, define, headaches, last, result, sleep, sweat
noun + (n.)insomnia Help allergy, anorexia, arthritis, bout, cause, chill, cold, combination, cure, cycle, depression, diarrhea, disorder, distress, disturbance, dizziness, drinking, drowsiness, effect, exhaustion, exposure, fatigue, gain, headache, heartbeat, hypertension, indigestion, jag, menopause, migraine, nausea, night, nighttime, obesity, pain, pill, problem, rebound, remedy, restlessness, sleep, sleepiness, sleeping, stomach, stress, struggle, sweat, symptom, tea, therapy, treatment, ulcer, weight, withdrawal [See all][See only the most frequent]
derivation: insomnious (adj.)
Word Parts  About this feature
The word insomnia contains the following parts:
in-2 Latin prefix that means not, without
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The prefix in-2 occurs in Latin loanwords and attaches to Latinate bases. The bases of most words prefixed with in-2 are independent adjectives (inadvertent , incognizant ), although the base adjective may no longer be in widespread use (as with incessant ). Exceptions include iniquitous and indignant . -in2 has multiple forms, as the 'n' sound in in-2 assimilates to the initial sound of the base to which it is attached. See the assimilated forms ig-, il-2, im-2, and ir-2.
somn Latin root that means sleep