Having the faculty of reason; endowed with reason; rational, as opposed to brute.Characterized by the use of reason; amenable to reason or sound sense; not senseless, foolish, or extravagant in thought or action.Conformable to or required by reason; due to or resulting from good judgment; rationally sound, sensible, natural, etc.Not exceeding the bounds of reason or common sense; moderate; tolerable.Moderate in amount or price; not high or dear: as, reasonable charges or prices; reasonable goods.In law, befitting a person of reason or sound sense; such as a prudent man would exercise or act upon in his own affairs: as, reasonable care; reasonable diligence; reasonable cause.Calculable; computable; hence, detailed; itemized.Talkative; ready in conversation.Synonyms Rational, Reasonable. See rational.Reasonably.