rationalist

CIDE DICTIONARY

rationalist, n. [Cf. F. rationaliste.].

 One who accepts rationalism as a theory or system; also, disparagingly, a false reasoner. See Citation under Reasonist.  [1913 Webster]

ROGET THESAURUS

rationalist

Irreligion

N irreligion, indevotion, godlessness, ungodliness, laxity, quietism, skepticism, doubt, unbelief, disbelief, incredulity, incredulousness, want of faith, want of belief, pyrrhonism, bout, agnosticism, atheism, deism, hylotheism, materialism, positivism, nihilism, infidelity, freethinking, antichristianity, rationalism, neology, atheist, skeptic, unbeliever, deist, infidel, pyrrhonist, giaour, heathen, alien, gentile, Nazarene, espri fort, freethinker, latitudinarian, rationalist, materialist, positivist, nihilist, agnostic, somatist, theophobist, irreligious, indevout, undevout, devoutless, godless, graceless, ungodly, unholy, unsanctified, unhallowed, atheistic, without God, skeptical, freethinking, unbelieving, unconverted, incredulous, faithless, lacking faith, deistical, unchristian, antichristian, worldly, mundane, earthly, carnal, worldly minded, irreligiously.

Reasoning,

N reasoning ratiocination rationalism, dialectics, induction, generalization, discussion, comment, ventilation, inquiry, argumentation, controversy, debate, polemics, wrangling, contention, logomachy, disputation, disceptation, paper war, art of reasoning, logic, process of reasoning, train of reasoning, chain of reasoning, deduction, induction, abduction, synthesis, analysis, argument, case, plaidoyer, opening, lemma, proposition, terms, premises, postulate, data, starting point, principle, inference, prosyllogism, syllogism, enthymeme, sorites, dilemma, perilepsis, a priori reasoning, reductio ad absurdum, horns of a dilemma, argumentum ad hominem, comprehensive argument, empirema, epagoge, reasoner, logician, dialectician, disputant, controversialist, controvertist, wrangler, arguer, debater polemic, casuist, rationalist, scientist, eristic, logical sequence, good case, correct just reasoning, sound reasoning, valid reasoning, cogent reasoning, logical reasoning, forcible reasoning, persuasive reasoning, persuasory reasoning, consectary reasoning, conclusive, subtle reasoning, force of argument, strong point, strong argument, persuasive argument, arguments, reasons, pros and cons, reasoning, rationalistic, argumentative, controversial, dialectic, polemical, discursory, discursive, disputatious, Aristotelian, eristic, eristical, debatable, controvertible, logical, relevant, for, because, hence, whence, seeing that, since, sith, then thence so, for that reason, for this reason, for which reason, for as, inasmuch as, whereas, ex concesso, considering, in consideration of, therefore, wherefore, consequently, ergo, thus, accordingly, a fortiori, in conclusion, in fine, finally, after all, au bout du compt, on the whole, taking one thing with another, ab actu ad posse valet consecutio, per troppo dibatter la verita si perde, troppo disputare la verita fa errare.