irrational

(ĭ-răsh'ə-nəl)
adj.

1. 1. Not endowed with reason.
   2. Affected by loss of usual or normal mental clarity; incoherent, as from shock.
   3. Marked by a lack of accord with reason or sound judgment: an irrational dislike.
2. 1. Being a syllable in Greek and Latin prosody whose length does not fit the metric pattern.
   2. Being a metric foot containing such a syllable.
3. Mathematics. Of or relating to an irrational number.

n. Mathematics
An irrational number.

irrationally ir·ra'tion·al·ly adv.
irrationalness ir·ra'tion·al·ness n.

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adjective

Not governed by or predicated on reason: illogical, unreasonable, unreasoned. Idioms: out of bounds. See reason/unreason.

adj

Definition: illogical, senseless
Antonyms: logical, rational, reasonable, reflective, sensible, sound, stable

IN BRIEF: Something that does not make sense.

Great art is as irrational as great music. It is mad with its own loveliness. — George Jean Nathan (1882-1958)

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For a list of words related to irrational, see:

• Excessive, Mad, Insane, or Radical
• Foolish, Immature, Bigoted, or Trivial

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See words rhyming with "irrational."

  See crossword solutions for the clue Irrational.

Dansk (Danish)
adj. - irrationel, ufornuftig , urimelig

idioms:

• irrational number    irrationelt tal

Nederlands (Dutch)
irrationeel, redeloos

Français (French)
adj. - irrationnel

idioms:

• irrational number    nombre irrationnel

Deutsch (German)
adj. - irrational, unsinnig

idioms:

• irrational number    irrationale Zahl

Ελληνική (Greek)
adj. - παράλογος, ανορθολογικός

idioms:

• irrational number    άρρητος αριθμός

Italiano (Italian)
irrazionale

idioms:

• irrational number    numero irrazionale

Português (Portuguese)
adj. - irracional

idioms:

• irrational number    número (m) irracional (Mat.)

Русский (Russian)
нелогичный, иррациональный, иррациональное число, неразумное существо

idioms:

• irrational number    иррациональное число

Español (Spanish)
adj. - irracional

idioms:

• irrational number    número irracional

Svenska (Swedish)
adj. - irrationell (äv. matem.), ogrundad, orimlig, oskälig

中文（简体）(Chinese (Simplified))
无理性的, 不合理的

idioms:

• irrational number    无理数

中文（繁體）(Chinese (Traditional))
adj. - 無理性的, 不合理的

idioms:

• irrational number    無理數

한국어 (Korean)
adj. - 불합리한, 무리수의

日本語 (Japanese)
n. - 不合理なもの, 無理数
adj. - 理性のない, 不合理な

idioms:

• irrational number    無理数

العربيه (Arabic)
‏(صفه) غير عاقل, غير منطقي‏

עברית (Hebrew)
adj. - ‮לא הגיוני, אבסורדי, חסר כוח-שפיטה, אי-רציונלי‬

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