rational

/ˈræʃənəl/

based on reason

She made a rational decision to save money.

She chose a sensible, reasoned option to save money.

formal

Based on or agreeable to reason; logical and sensible.

The committee took a rational approach to the budget cuts.

The committee used a logical, reasoned method when planning the budget reductions.

His argument was rational, backed by clear evidence.

His claim was logical and supported by solid proof.

Commonly used to describe thoughts, decisions, or behavior that follow logical reasoning.

English Dictionary