plural of reasonable person

(law) A legal standard for deciding the outcome of a criminal charge, requiring evidence that is sufficient to eliminate any doubts that a reasonable person might entertain about whether a claim is more likely to be true than not.

Alternative form of beyond a reasonable doubt

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

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

A doctrine in antitrust law which applies to contracts which "unreasonably" inhibit trade.

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

(idiomatic, chiefly in the negative) Logic; common sense.

(idiomatic) To seem logical, rational, or reasonable; to make sense.

(US, idiomatic) For reasons unknown and not worth speculating on.