reason

причина имя существительное:

причина (cause, reason, why, root, ground, account)

основание (base, basis, reason, bottom, foundation, ground)

разум (mind, reason, intellect, understanding, sense, brains)

повод (occasion, reason, rein, cause, motive, bridle)

рассудок (mind, reason, intellect, intelligence, brain, brains)

довод (argument, reason, plea, cause)

резон (reason)

мотив (motive, tune, reason, cause, ground, spring)

аргумент (argument, reason, fact)

соображение (consideration, reason)

благоразумие (Prudence, discretion, reason, reasonableness, policy)

оправдание (justification, excuse, acquittal, defense, vindication, reason)

интеллект (intelligence, intellect, mind, mentality, brains, reason)

справедливость (justice, Equity, fairness, right, righteousness, reason)

здравый рассудок (reason)

здравый ум (sanity, reason)

глагол:

рассуждать (reason, discourse, hold forth, dissertate, dissert, descant)

размышлять (meditate, reflect, think, ponder, contemplate, reason)

аргументировать (argue, reason)

убеждать (urge, assure, convince, persuade, exhort, reason)

уговаривать (persuade, coax, reason, sell, blandish, Win)

доказывать (prove, argue, demonstrate, show, establish, reason)

обсуждать (discuss, debate, consider, argue, deliberate, reason)

умозаключать (reason, gather)

умствовать (philosophize, reason)

делать вывод (conclude, infer, draw a conclusion, deduce, reason, elicit)