irrational
1. ir.ra.tio.nal \(')ir-'(r)ash-n*l, -*n-*l\ \(.)ir-.(r)ash-*-'nal-*t-e-\
\(')ir-'(r)ash-n*-le-, -*n-*l-e-\ aj [ME, fr. L irrationalis, fr. in- +
rationalis rational] : not rational : as : not endowed with reason or
understanding : lacking usual or normal mental clarity or coherence : not
governed by or according to reason {~ fears} in ancient prosody of a
syllable : having a quantity other than that required by the meter of a
foot : containing such a syllable reason. IRRATIONAL may imply actual
mental derangement but more often suggests words or actions directly in
conflict with reason {irrational beliefs} UNREASONABLE suggests guidance by
some force other than reason (as self-will, rage) that makes one deficient
in good sense {unreasonable extravagance} - ir.ra.tio.nal.i.ty n SYN syn
IRRATIONAL, UNREASONABLE mean not governed or guided by
2. irrational n 1: an irrational being 2: a real number that is not
expressible as the quotient of two integers