1. to respond to a question or statement in a way that lacks logic, sense, or fair judgment
He answered unreasonably when asked about his tardiness, blaming everyone but himself.
Ele respondeu irrazoavelmente quando questionado sobre seu atraso, culpando todos menos a si mesmo.
2. to give a response that is disproportionate or excessive to the situation
She answered unreasonably to his innocent question with harsh criticism.
Ela respondeu irrazoavelmente à sua pergunta inocente com crítica severa.