n.
1.a rational motive for a belief or action
2.an explanation of the cause of some phenomenon
3.the capacity for rational thought or inference or discrimination
4.the state of having good sense and sound judgment
5.a justification for something existing or happening
6.a fact that logically justifies some premise or conclusion reason v.
1.decide by reasoning
2.present reasons and arguments
3.think logically
Idiom of the Day
red-letter day
a day that is memorable because of some important event
Saturday was a red-letter day when we finally won the school championship.