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irrational

Meaning in simple English, pronunciation and examples

Pronunciation: US /ɪˈræʃənəl/

irrational means: Not based on clear thinking or good reasons.

adjective

WITHOUT GOOD REASONB2

Not based on clear thinking or good reasons.

  • I have an irrational fear of birds.
  • His anger made him behave in irrational ways.
  • Buying another car would be completely irrational.

Similar words: unreasonable, illogical, senseless

Opposites: rational, logical

Common phrases: irrational fear, irrational behaviour, irrational decision

NUMBER TYPEC1

A number that cannot be written as one whole number divided by another.

  • Pi is an irrational number.
  • The square root of two is irrational.
  • An irrational number has a decimal expansion that never ends or repeats.

Opposites: rational

Common phrases: irrational number, irrational root, irrational value

Questions about irrational

What does irrational mean?

Not based on clear thinking or good reasons.

What is irrational in other languages?

Türkçe: mantıksız · Español: irracional · Français: irrationnel · Deutsch: irrational · Italiano: irrazionale · 日本語: 不合理な

How do you pronounce irrational?

It is pronounced /ɪˈræʃənəl/.

How do you use irrational in a sentence?

I have an irrational fear of birds. His anger made him behave in irrational ways.

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Phrases with irrational

irrational in other languages

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