inert

adjective

in·​ert i-ˈnərt 

1

: lacking the power to move

2

: very slow to move or act : sluggish

3

: deficient in active properties

especially : lacking a usual or anticipated chemical or biological action

inert noun

inertly adverb

inertness noun

Synonyms

• dead
• dormant
• fallow
• free
• idle
• inactive
• inoperative
• latent
• off
• unused
• vacant

Choose the Right Synonym for inert

inactive, idle, inert, passive, supine mean not engaged in work or activity.

inactive applies to anyone or anything not in action or in operation or at work.

on inactive status as an astronaut

inactive accounts

idle applies to persons that are not busy or occupied or to their powers or their implements.

workers were idle in the fields

inert as applied to things implies powerlessness to move or to affect other things; as applied to persons it suggests an inherent or habitual indisposition to activity.

inert ingredients in drugs

an inert citizenry

passive implies immobility or lack of normally expected response to an external force or influence and often suggests deliberate submissiveness or self-control.

passive resistance

supine applies only to persons and commonly implies abjectness or indolence.

a supine willingness to play the fool

Examples of inert in a Sentence

an inert and lifeless body

How does he propose to stimulate the inert economy and create jobs?

Recent Examples on the Web

According to the study, 5 million tons of inert diamond dust could potentially cool the planet by almost 1.6 degrees Celsius in 45 years. —Devika Rao, theweek, 12 Nov. 2024

The 202-foot tall Vulcan rocket lifted off from Cape Canaveral Space Force Station at 7:25 a.m. EDT Friday morning, carrying an inert payload into space on a mission that, if successful, would qualify the rocket to carry payloads for national security missions. —Max Hauptman, USA TODAY, 4 Oct. 2024

So inert citizens contribute to a balanced civic sphere that allows government to get things done. —David Faris, Newsweek, 4 Nov. 2024

Unlike his terribly inert Countess Dracula, director Peter Sasdy finds an exquisite balance between character drama and alarming jolts within a larger story that plays closer to a Polanski-esque version of creeping madness than a typical gothic horror melodrama. —Declan Gallagher, EW.com, 30 Oct. 2024

Word History

Etymology

Latin inert-, iners unskilled, idle, from in- + art-, ars skill — more at arm

First Known Use

1647, in the meaning defined at sense 1

Phrases Containing inert

• inert gas

Kids Definition

inert

adjective

in·​ert in-ˈərt 

: unable or slow to move, act, or react

inert ingredients in cough medicine

inert gas

inertly adverb

inertness noun

Medical Definition

inert

adjective

in·​ert in-ˈərt 

1

: lacking the power to move

2

: deficient in active properties

especially : lacking a usual or anticipated chemical or biological action

an inert drug

inertness noun