underactive

adjective

un·​der·​ac·​tive ˌən-dər-ˈak-tiv How to pronounce underactive (audio)
: characterized by an abnormally low level of activity
an underactive thyroid gland
underactivity noun

Examples of underactive in a Sentence

Recent Examples on the Web Thyroid dysfunction, either underactive thyroid gland (hypothyroidism) or overactive thyroid gland (hyperthyroidism), may lead to heart block. Christopher Lee, Verywell Health, 25 Sep. 2024 Urgency, frequency, and incontinence are sometimes described as overactive bladder symptoms, while a full bladder and urinary retention are symptoms of an underactive bladder. Matthew Wosnitzer, Verywell Health, 8 July 2024 People with alcohol use disorder, hypothyroidism (having an underactive thyroid), or kidney conditions are more likely to experience calf pain. Lindsay Curtis, Health, 7 July 2024 This condition causes an underactive thyroid, which results in high thyroid-stimulating hormone (TSH) levels. Dr. Roshini Raj, Health, 14 June 2024 See all Example Sentences for underactive 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'underactive.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1959, in the meaning defined above

Time Traveler
The first known use of underactive was in 1959

Dictionary Entries Near underactive

Cite this Entry

“Underactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underactive. Accessed 4 Oct. 2024.

Kids Definition

underactive

adjective
un·​der·​ac·​tive ˌən-də-ˈrak-tiv How to pronounce underactive (audio)
: having an abnormally low level of activity
an underactive gland

Medical Definition

underactive

adjective
un·​der·​ac·​tive -ˈak-tiv How to pronounce underactive (audio)
: characterized by an abnormally low level of activity
an underactive thyroid gland
underactivity noun
plural underactivities
Last Updated: - Updated example sentences
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