underactive(redirected from underactively)
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Related to underactively: hypothyroidism, Underactive thyroid
Characterized by insufficient or abnormally low activity: an underactive area of the brain.
un′der·ac·tiv′i·ty (-ĭ-tē) n.
Functioning at less than full efficiency or productivity; said, for example, of glands such as the thyroid or the adrenals.