reason

Present reasons and arguments.

Decide by reasoning; draw or come to a conclusion.

“We reasoned that it was cheaper to rent than to buy a house”

Think logically.

“The children must learn to reason”

A rational motive for a belief or action.

“the reason that war was declared”

The state of having good sense and sound judgment.

“he had to rely less on reason than on rousing their emotions”

The capacity for rational thought or inference or discrimination.

“we are told that man is endowed with reason and capable of distinguishing good from evil”

A justification for something existing or happening.

“they had good reason to rejoice”

A fact that logically justifies some premise or conclusion.

“there is reason to believe he is lying”

An explanation of the cause of some phenomenon.

“the reason a steady state was never reached was that the back pressure built up too slowly”