inactive

Synonyms

Antonyms

In*ac"tive, a. Etym: [Pref. in- not + active: cf. F. inactif.] 1. Not active; having no power to move; that does not or can not produce results; inert; as, matter is, of itself, inactive. 2. Not disposed to action or effort; not diligent or industrious; not busy; idle; as, an inactive officer. 3. (Chem. & Opt.) Defn: Not active; inert; esp., not exhibiting any action or activity on polarized light; optically neutral; -- said of isomeric forms of certain substances, in distinction from other forms which are optically active; as, racemic acid is an inactive tartaric acid. Syn. -- Inert; dull; sluggish; idle; indolent; slothful; lazy. See Inert.