A Quick and Simple Dictionary

reason

1. Noun.  a cause:.
2. Noun.  (uncountable) rational thinking (or the capacity for it; the cognitive faculties, collectively, of conception, judgment, deduction and intuition; (italbrac, roughly) .
3. Noun.  (obsolete) something reasonable, in accordance with thought; justice.
4. Noun.  (rfv-sense) (obsolete) due exercise of the reasoning faculty.
5. Noun.  (context, mathematics) ratio; proportion.
6. Verb.  (intransitive) To exercise the rational faculty; to deduce inferences from premises; to perform the process of deduction or of induction; to ratiocinate; to reach conclusions by a systematic comparison of facts.
7. Verb.  (intransitive) Hence: To carry on a process of deduction or of induction, in order to convince or to confute; to formulate and set forth propositions and the inferences from them; to argue.
8. Verb.  (intransitive) To converse; to compare opinions.
9. Verb.  (transitive) To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss.
10. Verb.  (transitive, rare) To support with reasons, as a request.
11. Verb.  (transitive) To persuade by reasoning or argument.
12. Verb.  (transitive, with ''down'') To overcome or conquer by adducing reasons.
13. Verb.  (transitive, usually with ''out'') To find by logical process; to explain or justify by reason or argument.