inactive

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 /ɪnˈæktɪv/



WordReference Random House Learner's Dictionary of American English © 2017
in•ac•tive /ɪnˈæktɪv/USA pronunciation   adj. 
  1. not active:an inactive volcano.
  2. quiet; not doing much:an inactive, boring retirement.
  3. [Military.]not on active duty.
in•ac•tiv•i•ty /ˌɪnækˈtɪvɪti/USA pronunciation  n. [uncountable]a boring inactivity once he retired.

WordReference Random House Unabridged Dictionary of American English © 2017
in•ac•tive  (in aktiv),USA pronunciation adj. 
  1. not active:an inactive volcano.
  2. sedentary or passive:an inactive life.
  3. sluggish;
    indolent.
  4. [Mil.]not on active duty.
  5. Chemistry
    • inert;
      unreactive.
    • noting a compound that has no effect on polarized light.
in•active•ly, adv. 
in′ac•tivi•ty, in•active•ness, n. 
  • in-3 + active 1715–25
    • 1.See corresponding entry in Unabridged unmoving, immobile, inoperative.
    • 1, 2.See corresponding entry in Unabridged Inactive, dormant, inert, sluggish, torpid suggest lack of activity.
      Inactive indicates absence of action, indisposition to activity, or cessation of activity:an inactive compound, life, file of papers.Dormant suggests the quiescence or inactivity of that which sleeps but may be roused to action:a dormant volcano.Inert suggests the condition of dead matter, with no inherent power of motion or action;
      it may also mean unable to move, or heavy and hard to move:an inert mass; inert from hunger.Sluggish expresses slowness of natural activity or of that which does not move readily or vigorously:a sluggish stream, brain.Torpid suggests a state of suspended physical powers, a condition particularly of animals that hibernate:Snakes are torpid in cold weather.
    • 3.See corresponding entry in Unabridged lazy, idle, slothful.
    • 1.See corresponding entry in Unabridged –3. lively.


Collins Concise English Dictionary © HarperCollins Publishers::

inactive /ɪnˈæktɪv/ adj
  1. idle or inert; not active
  2. sluggish, passive, or indolent
  3. of or relating to persons or equipment not in active service
  4. (of a substance) having little or no reactivity
  5. (of an element, isotope, etc) having little or no radioactivity

inˈactively adv ˌinacˈtivity, inˈactiveness n



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