simple past tense and past participle of reason

(rare, nonstandard) Synonym of reasonable

(uncountable) The state or characteristic of being reasonable. / (countable) A reasonable action or behaviour.

One who reasons.

plural of reasoner

plural of reasoning

(philosophy) The use of reason to decide how to act.

(law) A degree of uncertainty to which a reason can be assigned; in those jurisdictions influenced by English common law, the minimum degree of uncertainty required to acquit a defendant.

(Roman Catholicism) Seven years of age, at which age a person is morally liable for the sins that he or she commits.

(obsolete) To be right. / To have grounds, justification etc. (to do something, or for something).