: weighing less than the normal or requisite amount
Examples of underweight in a Sentence
Adjective
the long illness left him frail and underweight
Recent Examples on the Web
Summer Lin, Los Angeles Times, 24 May 2025
The bank downgraded shares of the travel company to underweight from neutral.
—Lisa Kailai Han, CNBC, 9 May 2025
Individuals who are underweight or have a history of eating disorders should also avoid it.1 People with medical conditions or those taking medications, especially for diabetes, should consult a healthcare professional before starting.
—Brittany Lubeck, Verywell Health, 15 May 2025
Today, positioning is closer to neutral, according to the same analysts, but still underweight by historical standards.
—Catherine Baab, Quartz, 14 May 2025
See All Example Sentences for underweight
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Adjective
The cub was found April 12 in the Los Padres National Forest — underweight, alone and weak, according to a news release from the wildlife center.
—Summer Lin, Los Angeles Times, 24 May 2025
The bank downgraded shares of the travel company to underweight from neutral.
—Lisa Kailai Han, CNBC, 9 May 2025
Individuals who are underweight or have a history of eating disorders should also avoid it.1 People with medical conditions or those taking medications, especially for diabetes, should consult a healthcare professional before starting.
—Brittany Lubeck, Verywell Health, 15 May 2025
Today, positioning is closer to neutral, according to the same analysts, but still underweight by historical standards.
—Catherine Baab, Quartz, 14 May 2025
See All Example Sentences for underweight
Cite this Entry
“Underweight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underweight. Accessed 4 Jun. 2025.
Copy CitationMedical Definition
underweight
adjective
un·der·weight
-ˈwāt 
: weighing less than the normal amount for one's age, height, and build
underweight children
underweight adults typically have a body mass index of less than 18.5
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