un·​der·​ac·​tive | \ ˌən-dər-ˈak-tiv How to pronounce underactive (audio) \

Definition of underactive

: characterized by an abnormally low level of activity an underactive thyroid gland

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Other Words from underactive

underactivity \ ˌən-​dər-​ak-​ˈti-​və-​tē How to pronounce underactivity (audio) \ noun

Examples of underactive in a Sentence

Recent Examples on the Web The show pokes fun at some of quarantine’s biggest challenges, including overeating, TV binge-watching, hyperactive children, underactive spouses and loads of alcohol. Brad Rhines, NOLA.com, "Curtain rises on a strange season of theater, with fewer live productions and more new formats," 5 Oct. 2020 An underactive thyroid can cause dry skin that can lead to itchy breasts, in addition to many other symptoms like fatigue, constipation, thinning hair, and a slower heart rate, the Mayo Clinic says. Korin Miller, SELF, "14 Causes of Itchy Breasts Everyone Should Know," 10 Aug. 2020 Other possible causes of diffuse telogen hair loss include an overactive or underactive thyroid, with normal hair growth restored once the hormonal abnormality is corrected. New York Times, "She Was Losing Fistfuls of Hair. What Was Causing It?," 3 Feb. 2020 The underactive thyroid condition puts her in a high-risk group for virus infection. Bruce Selcraig, ExpressNews.com, "Many reasons to do the right thing: Self-quarantine against coronavirus in San Antonio," 16 Mar. 2020 His ailments included gout; a mild elevation of cholesterol; an inflammation of out-pouches in the bowel known as diverticulitis; and hormone replacement therapy for an underactive thyroid gland. New York Times, "Bernie Sanders Had Heart Attack, His Doctors Say as He Leaves Hospital," 4 Oct. 2019 Once evaluated by staff, Wilson was treated for his injuries and was also discovered to have an underactive thyroid, a condition that is easily treated with daily medication. Arizona Republic, azcentral, "'One cool hound' and more up for adoption in Phoenix-area shelters this week," 28 June 2019 While an underactive thyroid can cause weight gain, an overactive one (which is diagnosed as hyperthyroidism) increases your metabolism, which can in turn cause increased hunger, Gilwit says. Colleen Stinchcombe, Woman's Day, "Why Am I Always Hungry?," 19 Oct. 2018 The suit says he was seen at the VA's urology clinic for neurogenic bladder, a common complication of multiple sclerosis that causes the bladder to become overactive or underactive. Andy Marso, kansascity, "VA inflated catheter in Missouri man's penis, causing bleeding then death, suit says," 4 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'underactive.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of underactive

1959, in the meaning defined above

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Time Traveler for underactive

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The first known use of underactive was in 1959

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Statistics for underactive

Last Updated

13 Oct 2020

Cite this Entry

“Underactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underactive. Accessed 29 Nov. 2020.

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More Definitions for underactive


How to pronounce underactive (audio)

English Language Learners Definition of underactive

: not active enough


un·​der·​ac·​tive | \ -ˈak-tiv How to pronounce underactive (audio) \

Medical Definition of underactive

: characterized by an abnormally low level of activity an underactive thyroid gland

Other Words from underactive

underactivity \ -​ak-​ˈtiv-​ət-​ē How to pronounce underactivity (audio) \ noun, plural underactivities

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