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Definition of mood swing noun from the Oxford Advanced Learner's Dictionary

mood swing

noun
 
/ˈmuːd swɪŋ/
 
/ˈmuːd swɪŋ/
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  1. a sudden change of mood that is difficult to explain
    • Severe disruption of the sleep cycle can lead to depression and mood swings.
    Topics Mental healthc1
previously
adverb
 
 
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