1. To respond to a question or statement in a way that lacks logic, reason, or consistency with facts
He chose to answer irrationally instead of providing evidence for his claims.
Ele optou por responder irracionalmente em vez de fornecer evidências para suas afirmações.
2. To give a reply driven by emotions, impulse, or prejudice rather than rational thought
When confronted with criticism, she tends to answer irrationally out of anger.
Quando confrontada com críticas, ela tende a responder irracionalmente por raiva.