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Synonyms

underweight

American  
[uhn-der-wayt, uhn-der-wayt] / ˈʌn dərˈweɪt, ˈʌn dərˌweɪt /

adjective

  1. weighing less than is usual, required, or proper.


noun

  1. deficiency in weight below a standard or requirement.

underweight British  
/ ˌʌndəˈweɪt /

adjective

  1. weighing less than is average, expected, or healthy

  2. finance

    1. having a lower proportion of one's investments in a particular sector of the market than the size of that sector relative to the total market would suggest

    2. (of a fund etc) disproportionately invested in this way

      pension funds have become underweight of equities

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of underweight

First recorded in 1590–1600; under- + weight

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

As the Wall Street firm fears moving away from what has been a Goldilocks environment, it’s now recommending being 5% underweight on stocks in a portfolio, from a previous recommendation of being 4% overweight.

From MarketWatch ● Oct. 9, 2026

The bank has an underweight rating on the stock.

From The Wall Street Journal ● Oct. 2, 2026

They say that those in their early teens are much more likely to have miscarriages and underweight babies than adult women.

From BBC ● Sep. 23, 2026

“Many of these patients are not overweight, some are normal weight or even underweight, so you don’t want them to lose weight or muscle mass.”

From The Wall Street Journal ● Sep. 18, 2026

Pollard, still underweight, was bundled into a double-breasted black suit, the left pant leg slit over his cast.

From "Seabiscuit: An American Legend" by Laura Hillenbrand

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