The word is in the Wiktionary

10 short excerpts of Wiktionnary (A collaborative project to produce a free-content dictionary.)

— English words —

• irrational adj. Not rational; unfounded or nonsensical.
• irrational adj. (Mathematics, arithmetic, number theory, not comparable) Of a real number, that cannot be written as…
• irrational n. A real number that can not be expressed as the quotient of two integers, an irrational number.

— English word, defined in French —

• irrational adj. Irrationnel.

— English word, defined in Spanish —

• irrational adj. Irracional.

— English words, defined in Italian —

• irrational agg. Irrazionale.
• irrational s. (Matematica) irrazionale.

— In German —

• irrational Adj. Ohne Vernunft.
• irrational Adj. Nicht nachvollziehbar, nicht durch Überlegungen zu begreifen.
• irrational Adj. Mathematik: in keinem Verhältnis, nicht als Bruch darstellbar.

24 English words from 3 English definitions

arithmetic can cannot comparable expressed integers irrational irrational␣number Mathematics nonsensical not number number␣theory Of␣a quotient rational real real␣number that the theory two unfounded written

1 English word from 7 foreign definitions

als

16 foreign words from 7 foreign definitions

begreifen Bruch darstellbar durch Irracional Irrationnel irrazionale keinem Matematica Mathematik nachvollziehbar nicht Ohne Überlegungen Verhältnis Vernunft

20 suffixes (New words found by adding one or more letters at the end of the word.)

irrationals irrationally irrationalise irrationalism irrationalist irrationality irrationalize irrationalised irrationalises irrationalisms irrationalists irrationalized irrationalizes irrationalness irrationalising irrationalistic irrationalities irrationalizing irrational␣number irrational␣numbers

One prefix (New word found by adding one or more letters in front of the word.)

nonirrational

25 words-in-word (Words found as is inside the word. Minimum size 3 letters.)

-ation ion Ion -ion Iona Irr IRR nal- Ona ONA Oña rat Rat RAT 'rat rati Rati ratio ration rational RRAT tio Tio tion -tion

20 words-in-word RTL (Words found written from right to left, inside the word. Minimum size 3 letters.)

ano- arr ARR arr. ita ITA ITAR Lan LAN Lan. NOI noit OIt OIT Oita Ōita tar Tar TAR Tarr

3 anagrams found with an extra letter (New words formed with all the letters from the word and an extra letter.)

irrationals littorarian urinatorial

2 anagrams found minus a letter (New words formed with all the letters from the word minus a letter.)

intraoral rail␣train

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