1.
Rational decisions and thoughts are based on reason rather than on emotion.
He's asking you to look at both sides of the case and come to a rational decision...
? irrational
ADJ: usu ADJ n
• rationally
It can be very hard to think rationally when you're feeling so vulnerable and alone.
? irrationally
ADV: usu ADV with v
• rationality
We live in an era of rationality.
? irrationality
N-UNCOUNT
2.
A rational person is someone who is sensible and is able to make decisions based on intelligent thinking rather than on emotion.
Did he come across as a sane rational person?...
? irrational
ADJ