1. A reply or answer that fails to meet expected or required standards of quality, completeness, or appropriateness
The customer service representative's substandard response left the client frustrated and unsatisfied.
A resposta inadequada do representante de atendimento ao cliente deixou o cliente frustrado e insatisfeito.
2. An insufficient or poor-quality reaction to a question, problem, or situation
His substandard response to the emergency demonstrated a lack of proper training.
Sua resposta inadequada à emergência demonstrou falta de treinamento adequado.