mood disorder

noun

: any of several psychological disorders (such as major depressive disorder or bipolar disorder) characterized by abnormalities of emotional state

called also affective disorder

Examples of mood disorder in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Schizoaffective disorder is a mental health condition that is marked by a mix of schizophrenia symptoms, such as hallucinations and delusions, and mood disorder symptoms, such as depression, mania and a milder form of mania called hypomania, per the Mayo Clinic. Angela Andaloro, PEOPLE, 9 May 2026 Rates were high in women who lived with PMDD alongside other mood disorders, such as depression. Eliza Zhitnik, The Conversation, 8 May 2026 An independent study done in 2018, however found the denial rate for those with a primary diagnosis of an affective or mood disorder, such as bipolar disorder and depression was 76%, or 14 percentage points higher than those with physical ailments. Jeffrey Freedman, Sun Sentinel, 27 Apr. 2026 Both Sam and Dianne deal with chronic mood disorders, despite their different circumstances. Payton Turkeltaub, Variety, 3 Apr. 2026 See All Example Sentences for mood disorder

Word History

First Known Use

1969, in the meaning defined above

Time Traveler
The first known use of mood disorder was in 1969

Browse Nearby Words

Cite this Entry

“Mood disorder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mood%20disorder. Accessed 15 May. 2026.

Kids Definition

mood disorder

noun
: any of several psychological disorders characterized by abnormalities of emotional state

Medical Definition

mood disorder

noun
: any of several psychological disorders characterized by abnormalities of emotional state and including especially major depressive disorder, dysthymia, and bipolar disorder

called also affective disorder

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster