: weighing less than the normal or requisite amount
Synonyms
Examples of underweight in a Sentence
Adjective
the long illness left him frail and underweight
Recent Examples on the Web
Sean Conlon, CNBC, 25 Sep. 2024
Wells Fargo downgrades Colgate-Palmolive to underweight from equal weight Wells Fargo says gross margin expansion is slowing down.
—Michael Bloom, CNBC, 16 Sep. 2024
The lion was roughly 12 to 16 months old and 3 to 5 pounds underweight for her age, officials said.
—Nathan Solis, Los Angeles Times, 16 Sep. 2024
The body mass index uses height and weight to categorize people as underweight, normal, overweight, or obese.
—Elizabeth Yuko, Health, 14 Sep. 2024
See all Example Sentences for underweight 
Adjective
The analyst downgraded Ford Motor to equal weight from overweight, while General Motors was lowered to underweight from equal weight.
—Sean Conlon, CNBC, 25 Sep. 2024
Wells Fargo downgrades Colgate-Palmolive to underweight from equal weight Wells Fargo says gross margin expansion is slowing down.
—Michael Bloom, CNBC, 16 Sep. 2024
The lion was roughly 12 to 16 months old and 3 to 5 pounds underweight for her age, officials said.
—Nathan Solis, Los Angeles Times, 16 Sep. 2024
The body mass index uses height and weight to categorize people as underweight, normal, overweight, or obese.
—Elizabeth Yuko, Health, 14 Sep. 2024
See all Example Sentences for underweight
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Cite this Entry
“Underweight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underweight. Accessed 1 Oct. 2024.
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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