different between immature vs irrational

English

Etymology

From Middle French immature. Partially displaced unripe, from Old English unr?pe (“unripe, immature”).

Pronunciation

• IPA^(key): /?m??tj??(?)/, /?m??t???(?)/, /?m??t??(?)/
• Rhymes: -??(?)

Adjective

immature (comparative more immature, superlative most immature)

1. (now rare) Occurring before the proper time; untimely, premature (especially of death). [from 16th c.]
   • 1748, Samuel Richardson, Clarissa, Letter 481:

     And thou also canst best account for the causes of her immature death […] .

2. Not fully formed or developed; not grown. [from 17th c.]
3. Childish in behavior; juvenile. [from 20th c.]
   • Wilhelm Stekel - As quoted in The Catcher in the Rye (1951) by J. D. Salinger.

Synonyms

• (childish in behavior): infantile, milky; see also Thesaurus:childish

Translations

Noun

immature (plural immatures)

1. An immature member of a species.

Related terms

• mature
• immaturity

French

Adjective

immature (plural immatures)

1. immature, unripe

German

Pronunciation

Adjective

immature

1. inflection of immatur:
   1. strong/mixed nominative/accusative feminine singular
   2. strong nominative/accusative plural
   3. weak nominative all-gender singular
   4. weak accusative feminine/neuter singular

Italian

Adjective

immature

1. feminine plural of immaturo

Anagrams

• ammutire

Latin

Adjective

imm?t?re

1. vocative masculine singular of imm?t?rus

References

• immature in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• immature in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette

English

Etymology

From Latin irrati?n?lis, from ir- + rati?n?lis.

Pronunciation

• enPR: ?r?'sh(?)n?l, IPA^(key): /???æ?.(?.)n?l/

Adjective

irrational (comparative more irrational, superlative most irrational)

1. Not rational; unfounded or nonsensical.
   • July 18, 2012, Scott Tobias, AV Club The Dark Knight Rises[1]

     Where the Joker preys on our fears of random, irrational acts of terror, Bane has an all-consuming, dictatorial agenda that’s more stable and permanent, a New World Order that’s been planned out with the precision of a military coup.

2. (mathematics, arithmetic, number theory, not comparable) Of a real number, that cannot be written as the ratio of two integers.

   Antonym: rational

   Hyponym: transcendental

Derived terms

Translations

Noun

irrational (plural irrationals)

1. A real number that can not be expressed as the quotient of two integers, an irrational number.
   • 1946, Bertrand Russell, History of Western Philosophy, I.24:

     The square root of 2, which was the first irrational to be discovered, was known to the early Pythagoreans, and ingenious methods of approximating to its value were discovered.

Translations

German

Alternative forms

• irrationell

Pronunciation

• IPA^(key): /???at?si?ona?l/, /??at?si?o?na?l/

Adjective

irrational (comparative irrationaler, superlative am irrationalsten)

1. irrational

Declension