inactive
adj. B2 Upper Intermediate US //ˌɪˈnæktɪv// UK //ɪnˈæktɪv// in·ac·tive
adj. not doing anything or not moving. You use this to describe things that are resting, broken, or not currently working.
adj. not engaging in physical activity or work; lacking the power to move or act. In scientific contexts, it describes substances that do not react chemically with others.
The volcano has been inactive for hundreds of years.
The bank closed my account because it had been inactive for over two years.
The catalyst remains inactive until the temperature reaches a specific threshold, at which point the chemical reaction begins to accelerate rapidly.
From French inactif. See also earlier unactive.
Usage
Often follows a linking verb like 'be', 'become', or 'remain'.