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a. Incapable of moving or acting: "[Some patients] lingered, unable to breathe on their own, inert and unresponsive even to the most noxious stimulus" (Gary Greenberg).
b. Sluggish in action or motion; lethargic. See Synonyms at inactive.
2. Chemistry Not readily reactive with other elements; forming few or no chemical compounds.
3. Having no pharmacologic, metabolic, or other physiological effect.

[Latin iners, inert- : in-, not; see in-1 + ars, skill; see ar- in Indo-European roots.]

in·ert′ly adv.
in·ert′ness n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.inertness - immobility by virtue of being inert
immobility - the quality of not moving


A lack of action or activity:
عَدم حَرَكَه، خُمول، كَسَل، تَراخٍ


(iˈnəːt) adjective
1. without the power to move. A stone is an inert object.
2. (of people) not wanting to move, act or think. lazy, inert people.
iˈnertness noun
iˈnertia (-ʃiə) noun
the state of being inert. It was difficult to overcome the feeling of inertia that the wine and heat had brought on.
References in classic literature ?
FROM the inertness, or what we may term the vegetative character, of his ordinary mood, Clifford would perhaps have been content to spend one day after another, interminably,--or, at least, throughout the summer-time,--in just the kind of life described in the preceding pages.
Rochester; that the impetuous will of the latter held complete sway over the inertness of the former: the few words which had passed between them assured me of this.
It's enough to look at the red hands hanging at the end of those short arms, at those slow, prom- inent brown eyes, to know the inertness of her mind --an inertness that one would think made it ever- lastingly safe from all the surprises of imagina- tion.
Then the air was slowly, very slowly, exhaled, and his body as slowly flattened itself down into inertness.
He was in a manner devoted to it with a sort of inert fanaticism, or perhaps rather with a fanatical inertness.
Titanium is becoming one of three premiere metal group opportunities for additive manufacturing systems of numerous types, sought after primarily for its high strength to weight ratio, biological inertness, and other desirable properties when combined with additive layer manufacturing.
Tenders are invited for Supply of laboratory glassware and miscellaneous items:maximum inertness to widest range of chemicas, smooth pore and surface, outstanding corrosion ressistance, resistance to thermal shock, low thermal expansion, physiological inertness.
Some AAP volunteers had spotted Gajendra Singh, a father of three, with his scarf around his neck and informed the party leaders, who then requested Singh to climb down and lashed out at Delhi Police for their inertness.
Notably, the series' performance property benefits include: high swelling capability, low surface energy, inertness, anti-agglomeration, and easy processing to maximize both transmittance and haze for the best look.
PEEK also demonstrates other high-performance characteristics such as dimensional stability, high burst pressure, chemical inertness, heat resistance, and outstanding lubricity.
Exposing material to liquid nitrogen is said to help prevent melting or decomposition, or achieve embrittlement, resulting in a higher yield of particles in the desired target range, more uniform particle size distribution, higher production rates, improved product quality and enhanced process safety due to the nitrogen inertness.
Israel has always used the inertness of the international community efficiently.