Argon is an inert gas used by welders.
inert as in the inert gases or "noble" gases
The inert gas had no effect on the experiment. The bomb was inert and failed to explode.
Still, inert, fixed.
Nitrogen is an inert gas; it is non-reactive in chemical situations.
inert
The word "inactive" best describes someone who is inert. It implies a lack of movement or activity.
The word "inert" is used to describe something that is in a state of doing nothing. In terms of chemistry, a substance is inert if it is not chemically reactive.
inactive, inert, indifferent, neutral, stable, noble, and dormant.
The word could be inert, as in unable to move, or an inert gas that does not change.
Inert
According to the English language, to be inert means to be in a form or state of doing little or practically nothing. In chemistry, the word inert is usually used to illustrate something that is not chemically active.
The word you are looking for is "inert".