1. A condition or situation that lacks clear definition, boundaries, or resolution; a state of ambiguity or uncertainty
The project remained in an undefined state for months without clear direction.
O projeto permaneceu em estado indefinido por meses sem direção clara.
2. In computing, a variable or system condition whose value or status cannot be determined or has not been explicitly set
The program crashed due to an undefined state in the database.
O programa falhou devido a um estado indefinido no banco de dados.
3. A vague or indeterminate emotional or psychological condition
She felt in an undefined state between happiness and sadness.
Ela se sentia em estado indefinido entre felicidade e tristeza.