American English

Definition of inactive adjective from the Oxford Advanced American Dictionary



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  1. 1not doing anything; not active Some animals are inactive during the daytime. politically inactive The volcano has been inactive for 50 years.
  2. 2not in use; not working an inactive oil well
  3. 3having no effect an inactive drug/disease opposite active
noun [uncountable] periods of enforced inactivity and boredom The inactivity of the local government was deplorable.
See the Oxford Advanced Learner's Dictionary entry: inactive