UNDERWEIGHT Synonyms: 57 Similar and Opposite Words

underweight

adjective

Definition of underweight next

as in lightweight

having little weight the long illness left him frail and underweight

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Example Sentences

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Recent Examples of underweight 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 Consider These Questions Moreau cautions that short-term fasting is not for everyone, and people with medical conditions, or those who are underweight or prone to disordered eating should consult a clinician before making dietary changes. —

Tom Gavin, EverydayHealth.com, 11 Nov. 2025 Strays may appear underweight, often roam alone, and tend to hang around homes. —

Maria Azzurra Volpe, MSNBC Newsweek, 10 Nov. 2025 See All Example Sentences for underweight

Recent Examples of Synonyms for underweight

lightweight

Adjective

The lightweight fabric keeps things breathable on warm flights, and each piece works separately throughout the trip—style the pants with a button-down for sightseeing or wear the top with jeans for dinner.

— Rosie Marder, Travel + Leisure, 6 Mar. 2026
The aircraft is also more than 20 percent lighter than similar drones made from lightweight, high-strength carbon fiber.

— Sujita Sinha, Interesting Engineering, 5 Mar. 2026