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 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"
a rational motive for a belief or action; "the reason that war was declared"; "the grounds for their declaration"
think logically; "The children must learn to reason"
decide by reasoning; draw or come to a conclusion; "We reasoned that it was cheaper to rent than to buy a house"
being of crucial importance; "a pivotal event"; "Its pivotal location has also exposed it to periodic invasions"- Henry Kissinger; "the polar events of this study"; "a polar principal"
sound practical judgment; "Common sense is not so common"; "he hasn't got the sense God gave little green apples"; "fortunately she had the good sense to run away"