1. The incorrect, inappropriate, or unlawful use of something; using something in a way that violates its intended purpose or established rules
The improper use of company equipment is grounds for termination.
O uso impróprio de equipamento da empresa é motivo para demissão.
2. Misuse of a substance, tool, or resource in violation of safety guidelines or legal regulations
Improper use of pesticides can harm the environment.
O uso impróprio de pesticidas pode prejudicar o meio ambiente.