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Definition of underactive

underactive

/ˌʌndɚˈæktɪv/
un · der · ac · tive
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underactive Lexical Profile

underactive Game Scores & Validity

• adjective

1

Less active than is normal or desirable, especially with reference to a bodily organ, gland, or physiological system that produces an insufficient amount of hormones or secretions.

Example

"Persistent fatigue and unexplained weight gain are common symptoms of an underactive thyroid gland."

Synonyms
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Antonyms
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• Rhymes for underactive

• Nearby Words

underachieve
underachievement
underachiever
underactive
underage
underappreciate
underappreciated

Cite this Entry

Wordmom. (2026). Definition of Underactive. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/underactive
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