1. to behave in a way that contradicts one's previous actions, statements, or principles
He claims to care about the environment but acts inconsistently by driving a gas-guzzling car.
Ele afirma se importar com o meio ambiente, mas age inconsistentemente ao dirigir um carro que consome muito combustível.
2. to fail to follow a consistent pattern of behavior or decision-making
The manager acted inconsistently when he praised the employee one day and criticized similar work the next day.
O gerente agiu inconsistentemente quando elogiou o funcionário um dia e criticou trabalho similar no dia seguinte.