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mood swing

American  
[mood swing] / ˈmud ˌswɪŋ /

noun

mood swings plural
  1. a sudden marked shift in mood, especially one not explained by immediate circumstances.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It’s a massive mood swing that will reshape Philly’s offseason.

From The Wall Street Journal • May 11, 2026

Dare I say, the party’s mood swing from near-suicidal to euphoric has been quite something.

From Los Angeles Times • Nov. 23, 2025

The six Kiwi crewmembers shouted, hugged and fist-bumped after crossing the finish line, a massive mood swing from days earlier, when Burling glumly discussed a four-point penalty for colliding with the U.S. catamaran during training.

From Seattle Times • Jan. 15, 2023

He also used the fake accent when imitating her with dealing with a pregnancy mood swing, according to reports.

From Fox News • Dec. 29, 2020

I demanded, confused by his sudden mood swing as much as his words.

From "Twilight" by Stephenie Meyer

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