different between infantile vs irrational

English

Etymology

Mid-15th century, "pertaining to infants," from Latin infantilis (“pertaining to an infant”), from ?nf?ns. Sense of "infant-like" is from 1772.

Adjective

infantile (comparative more infantile, superlative most infantile)

1. Pertaining to infants.

   infantile paralysis
2. Childish; immature.

Synonyms

• (childish): puerile, milky; see also Thesaurus:childish

Derived terms

• infantilely
• infantilise

Translations

References

French

Pronunciation

• IPA^(key): /??.f??.til/

Adjective

infantile (plural infantiles)

1. infantile

Derived terms

• infantilisateur
• infantilisation
• infantiliser
• infantilité

See also

• enfance
• enfant

Italian

Etymology

From Latin infantilis.

Pronunciation

• IPA^(key): /in.fan?ti.le/

Adjective

infantile (plural infantili)

1. infantile (relating to children or babies)
2. infantile puerile, childish, babyish

   Synonym: puerile

Derived terms

• infantilismo
• infantilità
• infantilmente

Related terms

• infanzia

Anagrams

• infilante

Further reading

• infantile in Treccani.it – Vocabolario Treccani on line, Istituto dell'Enciclopedia Italiana

Swedish

Adjective

infantile

1. absolute definite natural masculine form of infantil.

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