- not active: an inactive volcano.
- sedentary or passive: an inactive life.
- sluggish; indolent.
- Military. not on active duty.
- inert; unreactive.
- noting a compound that has no effect on polarized light.
Origin of inactive
SynonymsSee more synonyms for on Thesaurus.com
1. unmoving, immobile, inoperative. 1, 2. Inactive, dormant, inert, sluggish, torpid suggest lack of activity. Inactive indicates absence of action, indisposition to activity, or cessation of activity: an inactive compound, life, file of papers. Dormant suggests the quiescence or inactivity of that which sleeps but may be roused to action: a dormant volcano. Inert suggests the condition of dead matter, with no inherent power of motion or action; it may also mean unable to move, or heavy and hard to move: an inert mass; inert from hunger. Sluggish expresses slowness of natural activity or of that which does not move readily or vigorously: a sluggish stream, brain. Torpid suggests a state of suspended physical powers, a condition particularly of animals that hibernate: Snakes are torpid in cold weather. 3. lazy, idle, slothful.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for inactivity
While some may classify that inactivity as laziness or indifference, Brown suggests the contrary.Deepwater Horizon: Life Drowning in Oil
November 2, 2014
To keep you off your seat and on your feet, many trackers will even vibrate after a certain timeframe of inactivity.How to Better Use Your Data
January 8, 2014
At long last, a rest—although God knows it takes full as much energy to unwind and force the inactivity as it does to be active.Leonard Bernstein Asked About Hemingway, So Martha Gellhorn Set the Record Straight
Leonard Bernstein, Martha Gellhorn
October 27, 2013
Could it be that we are simply poorly adapted to inactivity?Is Your Chair Killing You? The Consequences of Comfort
Daniel E. Lieberman
October 14, 2013
“This can then lead to inactivity, which can lead to frailty, then to ill health,” she says.A 100-Year-Old-Driver Crashes into School Kids. Time to Take Grandpa’s Car Keys?
August 31, 2012
Then, after a few moments, inactivity would bring him panic.The Forest
Stewart Edward White
The days that followed were days of weary waiting and inactivity.The Long Labrador Trail
Inversely, inactivity weakens the effect of irritations which correspond to it.The Sexual Question
For in us inactivity is the child of cowardice, and carelessness of inactivity and indolence.Laws
The marvel of it was how he had developed this quality of defense in inactivity.The Flockmaster of Poison Creek
George W. Ogden
- idle or inert; not active
- sluggish, passive, or indolent
- military of or relating to persons or equipment not in active service
- chem (of a substance) having little or no reactivity
- (of an element, isotope, etc) having little or no radioactivity
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
Word Origin and History for inactivity
Online Etymology Dictionary, © 2010 Douglas Harper