1. A reaction or reply that cannot be anticipated or foreseen, characterized by lack of consistency or predictability
The patient's unpredictable response to the medication made treatment difficult.
A resposta imprevisível do paciente ao medicamento dificultou o tratamento.
2. In behavioral or psychological contexts, an action or reaction that deviates from expected patterns
His unpredictable response to criticism surprised everyone in the meeting.
Sua resposta imprevisível à crítica surpreendeu todos na reunião.