morning sickness

American  

noun

1. nausea occurring in the early part of the day, especially as a characteristic symptom in the first months of pregnancy.

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morning sickness British  

noun

1. nausea occurring shortly after rising: an early symptom of pregnancy

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Etymology

Origin of morning sickness

First recorded in 1875–80

Example Sentences

See Examples For:

morning sickness

The press praised Kate for eating avocados to help cure her morning sickness when she was pregnant in 2017.

From The Wall Street Journal ● Aug. 21, 2026

About 80% of pregnant women experience morning sickness, according to the NHS, with some expectant mums having such extreme nausea that they struggle with daily life.

From BBC ● Dec. 10, 2025

When it comes to medications that can lessen the symptoms of HG, there’s the old nausea standby of Zofran, and there’s Unisom, which is used for morning sickness.

From Slate ● Sep. 15, 2024

Though it was long thought that morning sickness is caused by hCG, the recent breakthrough has shown that HG's main cause is actually the hormone GDF15, which is part of a normal stress response.

From Science Daily ● May 22, 2024

For starters, Mrs. Richardson had had terrible morning sickness, bouts of dizziness and vomiting that didn’t end with the first trimester but continued on unabated—if anything, more vigorously—as the weeks went on.

From "Little Fires Everywhere" by Celeste Ng