/ ɪnˈæktɪv; NAmE / adjective
1.
not doing anything; not active :
Some animals are inactive during the daytime.
politically inactive
The volcano has been inactive for 50 years.
2.
not in use; not working :
an inactive oil well
3.
having no effect :
an inactive drug / disease
OPP active
► in·activ·ity / ˌɪnækˈtɪvəti; NAmE / noun [ U ]:
periods of enforced inactivity and boredom
The inactivity of the government was deplorable.