as in lightweight
having little weight
the long illness left him frail and underweight
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of underweight
Those children were severely malnourished and underweight, according to the district attorney’s office, weighing 48 and 50 pounds, respectively, when they were removed from Helton's home.
—
Ricardo Delgado, San Antonio Express-News, 6 Feb. 2026
Radiographs showed no broken bones or major injuries, though veterinarians noted the cub was underweight and had a small laceration on her front paw, according to Cort Klopping, a spokesperson for the California Department of Fish and Wildlife.
—Aidin Vaziri, San Francisco Chronicle, 30 Jan. 2026
One was a listless, underweight female goat with no appetite.
—Nicole Blanchard, Idaho Statesman, 23 Dec. 2025
Mutual funds lean overweight financials while hedge funds are underweight, and hedge funds are overweight consumer discretionary as mutual funds pull back.
—Yun Li, CNBC, 28 Nov. 2025
See All Example Sentences for underweight
Ricardo Delgado, San Antonio Express-News, 6 Feb. 2026
Radiographs showed no broken bones or major injuries, though veterinarians noted the cub was underweight and had a small laceration on her front paw, according to Cort Klopping, a spokesperson for the California Department of Fish and Wildlife.
—Aidin Vaziri, San Francisco Chronicle, 30 Jan. 2026
One was a listless, underweight female goat with no appetite.
—Nicole Blanchard, Idaho Statesman, 23 Dec. 2025
Mutual funds lean overweight financials while hedge funds are underweight, and hedge funds are overweight consumer discretionary as mutual funds pull back.
—Yun Li, CNBC, 28 Nov. 2025
See All Example Sentences for underweight
Recent Examples of Synonyms for underweight
lightweight
Adjective
-
The result highlighted their potential for wearable electronics, lightweight power systems, and flexible solar applications.—
Georgina Jedikovska,
Interesting Engineering,
7 May 2026
-
Sulfate-free formulas and ingredients like aloe vera, hydrolyzed proteins, shea butter, and lightweight oils boost moisture without weighing strands down.—
Aimee Simeon,
Glamour,
7 May 2026
Cite this Entry
“Underweight.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underweight. Accessed 9 May. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
