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 intense morning sickness she endured during the pregnancy had eroded the enamel on her teeth.

From The Wall Street Journal ● Dec. 28, 2025

Lady Beckham brings him up in conversation, when discussing the morning sickness she faced while pregnant with him and performing with the Spice Girls.

From BBC ● Oct. 8, 2025

While regular morning sickness typically subsides at around 12 weeks, HG can last the whole time.

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