What does underactive mean?
Underactive means Less than normally active..
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Pronunciation varies by accent · adjective
Less than normally active..
Thus a person with an underactive thyroid can gain weight even on a low-calorie diet.
Use underactive when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Underactive means Less than normally active..
Common synonyms include hypoactive, inactive.
Possible antonyms include overactive.
Thus a person with an underactive thyroid can gain weight even on a low-calorie diet.
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