underactive

[ uhn-der-ak-tiv ]

adjective
  1. insufficiently active: an underactive thyroid gland.

Origin of underactive

1
First recorded in 1955–60; under- + active

Other words from underactive

  • un·der·ac·tiv·i·ty, un·der·ac·tive·ness, noun

Words Nearby underactive

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How to use underactive in a sentence

British Dictionary definitions for underactive

underactive

/ (ˌʌndərˈæktɪv) /


adjective
  1. (of the thyroid or adrenal glands) not functioning at full capacity

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