名詞 rationalism:

1. (philosophy) the doctrine that knowledge is acquired by reason without resort to experience
2. the theological doctrine that human reason rather than divine revelation establishes religious truth
3. the doctrine that reason is the right basis for regulating conduct
   同義詞：freethinking

ra.tion.al.ism

n.（名詞）
Reliance on reason as the best guide for belief and action.
理性至上：依靠理性，把它作為信仰和行動(dòng)的最高指南
Philosophy The theory that the exercise of reason, rather than the acceptance of empiricism, authority, or spiritual revelation, provides the only valid basis for action or belief and that reason is the prime source of knowledge and of spiritual truth.
【哲學(xué)】 唯理論，理性主義：認(rèn)為理性分析，而不是對(duì)經(jīng)驗(yàn)主義，權(quán)威或神靈感應(yīng)是信仰和行動(dòng)的源泉的理論，還認(rèn)為理性是知識(shí)和精神真理的主要來(lái)源

【引伸】
ra.tionalist
n.（名詞）
ra.tionalis.tic
adj.（形容詞）
ra.tionalis.tically
adv.（副詞）