Alle Lehren, die das I.e zu umgrenzen u. zur Geltung zu bringen suchen; Ggs.: Rationalismus.
ETYM Latin irrationalis: cf. French irrationnel. Related to In- not, and Rational.
1. Not consistent with or using reason.
2. (Math) Real but not expressible as the quotient of two integers.
In an irrational manner; SYN. without reasoning.