RATIONALIST
Ra"tion*al*ist, n. Etym: [Cf. F. rationaliste.]

Defn: One who accepts rationalism as a theory or system; also, disparagingly, a false reasoner. See Citation under Reasonist.

RATIONALISTIC; RATIONALISTICAL
Ra`tion*al*is"tic, Ra`tion*al*is"tic*al a.

Defn: Belonging to, or in accordance with, the principles of
rationalism.
— Ra`tion*al*is"tic*al*ly, adv.

RATIONALITY Ra`tion*al"i*ty, n.; pl. -ties. Etym: [F. rationalité, or L. rationalitas.]

Defn: The quality or state of being rational; agreement with reason; possession of reason; due exercise of reason; reasonableness. When God has made rationality the common portion of mankind, how came it to be thy inclosure Gov. of Tongue. Well-directed intentions, whose rationalities will never bear a rigid examination. Sir T. Browne.

RATIONALIZATION
Ra`tion*al*i*za"tion, n.

Defn: The act or process of rationalizing.

RATIONALIZE
Ra"tion*al*ize, v. t.

1. To make rational; also, to convert to rationalism.