irrational

  • 11Irrational — Irrational, lat. deutsch, vernunftwidrig; I.ismus, I.ität, Vernunftwidrigkeit. In der Mathematik heißen diejenigen Größen i.e, welche in ihren Theilen nicht durch einander zusammengesetzt werden können; bei den Zahlen diejenigen, welche sich… …

    Herders Conversations-Lexikon

  • 12irrational — (adj.) late 15c., not endowed with reason (of beats, etc.); earlier (of quantities) inexpressible in ordinary numbers (late 14c.); from L. irrationalis without reason, from assimilated form of in not, opposite of (see IN (Cf. in ) (1)) +… …

    Etymology dictionary

  • 13irrational — [adj] illogical, senseless aberrant, absurd, brainless, cockamamie*, crazy, delirious, demented, disconnected, disjointed, distraught, fallacious, flaky*, foolish, freaky, incoherent, injudicious, insane, invalid, kooky*, loony*, mad, mindless,… …

    New thesaurus

  • 14irrational — ► ADJECTIVE ▪ not logical or reasonable. DERIVATIVES irrationality noun irrationally adverb …

    English terms dictionary

  • 15irrational — I. adjective Etymology: Middle English, from Latin irrationalis, from in + rationalis rational Date: 14th century not rational: as a. (1) not endowed with reason or understanding (2) lacking usual or normal mental clarity or coherence b. not… …

    New Collegiate Dictionary

  • 16Irrational — Als irrational (von lat.: irrationalis, „unvernünftig“) bezeichnet man Sachverhalte oder Ideen, die der menschlichen Vernunft (lat.: ratio) widersprechen oder aber sich dieser entziehen. Der Begriff Irrationalität wird hierzu teils synonym als… …

    Deutsch Wikipedia

  • 17irrational — vernunftwidrig; irrwitzig; paradox; unsinnig; widersinnig; konfus; unvernünftig; nicht rational; wahnwitzig; absurd; unlogisch; antinomi …

    Universal-Lexikon

  • 18irrational — adj. irrational to + inf. (it was irrational to react in that manner) * * * [ɪ ræʃ(ə)nəl] irrational to + inf. (it was irrational to react in that manner) …

    Combinatory dictionary

  • 19irrational — adjective 1 irrational behaviour, feelings etc seem strange because they are not based on clear thought or reasons: My sister keeps telling me that my fear of flying is irrational. 2 someone who is irrational tends to behave or do things without… …

    Longman dictionary of contemporary English

  • 20irrational — /ɪˈræʃənəl / (say i rashuhnuhl) adjective 1. without the faculty of, or not endowed with, reason: irrational animals. 2. without, or deprived of, sound judgement: *She was a grown cow now, and a cow in calf at that, than which there is no more… …