Definition of dysthymia
: a mood disorder characterized by chronic mildly depressed or irritable mood often accompanied by other symptoms (such as eating and sleeping disturbances, fatigue, and poor self-esteem)
— called also dysthymic disorder
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Merriam-Webster unabridged
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Time Traveler for dysthymia
The first known use of dysthymia was in 1844
See more words from the same year