<p><strong>Adjective</strong></p><ul><li>having no inherent power of action, motion, or resistance (active): inert matter.</li><li>Synonyms: motionless, lifeless, unmoving, immobile.</li><li>Chemistry: having little or no ability to react, as nitrogen that occurs uncombined in the atmosphere.</li><li>Pharmacology: having no pharmacological action, as the excipient of a pill.</li><li>inactive or sluggish by habit or nature.</li></ul>