1. Not consistent with or using reason
   "irrational fears"; "irrational animals" 
2. Real but not expressible as the quotient of two integers
   "irrational numbers"

1. A real number that cannot be expressed as a rational number
   - irrational number

Derived forms: irrationals

See also: blind, illogical, incoherent, irrationality, irrationally, nonrational, ratio, reasonless, superstitious, unlogical, unreasonable, unreasoning

Type of: real, real number

Antonym: rational

Encyclopedia: Irrational

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• shaft louse
• shaft of light
• shag
• shag rug
• shagbark
• shagbark hickory
• shagged
• shagged out
• shaggily
• shagginess
• shaggy
• shaggy cap
• shaggy dog story
• shaggy-coated
• shaggy-haired
• shaggymane
• shaggymane mushroom
• shagreen
• Shah
• Shah Jahan
• Shah of Iran
• Shah Pahlavi
• shahadah
• Shahaptian