rational

Having or exercising the ability to reason. synonym: logical.

Consistent with or based on reason or good judgment; logical or sensible.

Of sound mind; sane.

Capable of being expressed as a quotient of integers.

A rational number.

In mathematics, a rational number.

One who is a believer in so-called ‘rational’ reforms, as in dress or food.

Of, pertaining to, or springing from the reason, in the sense of the highest faculty of cognition.

Endowed with reason, in the sense of that faculty which distinguishes man from the brutes: as, man is a rational animal.

Conformable to the precepts of reason, especially of the practical reason; reasonable; wise.