reason

reason [n1] mental analysis acumen, apprehension, argumentation, bounds, brain*, brains*, comprehension, deduction, dialectics, discernment, generalization, induction, inference, intellect, intellection, judgment, limits, logic, lucidity, marbles*, mentality, mind, moderation, propriety, ratiocination, rationalism, rationality, rationalization, reasonableness, reasoning, saneness, sanity, sense, senses*, sensibleness, sound mind, soundness, speculation, understanding, wisdom, wit; concepts 37,409 reason [n2] intention, aim antecedent, argument, basis, cause, consideration, design, determinant, end, goal, grounds, idea, impetus, incentive, inducement, motivation, motive, object, occasion, proof, purpose, rationale, root, spring, target, ulterior motive, warrant, wherefore*, why, why and wherefore*, whyfor*; concept 659 reason [n3] explanation for an action account, apologia, apology, argument, case, cover, defense, excuse, exposition, ground, idea, justification, notion, proof, rationale, rationalization, song and dance*, sour grapes*, the whole idea*, vindication, whatfor*, wherefore*, why*, why and wherefore*, whyfor*; concept 661 reason [v1] mentally analyze adduce, cerebrate, cogitate, conclude, contemplate, decide, deduce, deduct, deliberate, draw conclusion, draw from, examine, figure out, gather, generalize, infer, make out, philosophize, ratiocinate, rationalize, reflect, resolve, solve, speculate, study, suppose, syllogize, think, think through, thresh out, work out; concept 37 reason [v2] argue, persuade bring around, contend, debate, demonstrate, discourse, discuss, dispute, dissuade, establish, expostulate, justify, move, point out, prevail upon, prove, remonstrate, show error of ways*, talk into, talk out of, urge, win over; concepts 46,56,68 —Ant. agree, go along