ir`ra´tion`al Pronunciation: ĭr`răsh´ŭn`*a*l

a. | 1. | |

1. | Not rational; void of reason or understanding; | |

2. | Not according to reason; having no rational basis; clearly contrary to reason; easily disproved by reasoning; absurd; - of assertions and beliefs. | |

3. | (Math.) Not capable of being exactly expressed by an integral number, nor by a ratio of integral numbers; surd; - said especially of roots. See Surd. |

Adj. | 1. | irrational - not consistent with or using reason; "irrational fears"; "irrational animals"Antonyms: rational - consistent with or based on or using reason; "rational behavior"; "a process of rational inference"; "rational thought" |

2. | irrational - real but not expressible as the quotient of two integers; "irrational numbers"Antonyms: rational - capable of being expressed as a quotient of integers; "rational numbers" |

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**-- irrational --**

irrational hostility

irrational impulse

irrational motive

irrational number

irrationality

irrationally

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irreality

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Ironwort

Irony

Iroquoian

Iroquoian language

Iroquois

Iroquois League

Irous

Irp

IRQ

IRR

irradiance

irradiant

Irradiate

irradiation

irradicate

irrational hostility

irrational impulse

irrational motive

irrational number

irrationality

irrationally

irrationalness

Irrawaddy

Irrawaddy River

irreality

irrebuttable

irreceptive

irreclaimable

Irrecognition

Irrecognizable

Irreconcilability