follow Dictionary.com

Get the details behind our redesign

underactive

[uhn-der-ak-tiv] /ˌʌn dərˈæk tɪv/
adjective
1.
insufficiently active:
an underactive thyroid gland.
Origin
1955-1960
1955-60; under- + active
Related forms
underactivity, underactiveness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples for underactive
  • The technique excites nerve cells in a small area of the brain that is underactive in depressed patients.
  • They engineered cells to become either hyperactive or underactive in response to specific wavelengths of light.
  • Pale skin areas are due to too little melanin or underactive melanocytes.
  • The immune response may be overactive or underactive.
  • Unfortunately, about half of those with underactive thyroids do not know they have a definable and treatable problem.
  • With guided imagery, you create relaxing images in your mind hypothyroidism see underactive thyroid hysterectomy.
  • Sometimes, however, the thyroid can get out of balance-either becoming overactive or underactive.
British Dictionary definitions for underactive

underactive

/ˌʌndərˈæktɪv/
adjective
1.
(of the thyroid or adrenal glands) not functioning at full capacity
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source

Word of The Day

Difficulty index for underactive

Few English speakers likely know this word

Word Value for underactive

17
0
Scrabble Words With Friends