underactive

adjective un·der·ac·tive \ ˌən-dər-ˈak-tiv \

Definition of underactive

:characterized by an abnormally low level of activity
  • an underactive thyroid gland

underactivity

play \ˌən-dər-ak-ˈti-və-tē\ noun

Recent Examples of underactive from the Web

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First Known Use of underactive

1959


UNDERACTIVE Defined for English Language Learners

underactive

adjective

Definition of underactive for English Language Learners

  • : not active enough


Medical Dictionary

underactive

adjective un·der·ac·tive \ -ˈak-tiv \

medical Definition of underactive

:characterized by an abnormally low level of activity
  • an underactive thyroid gland

underactivity

play \-ak-ˈtiv-ət-ē\ noun plural underactivities

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