different between dizzy vs irrational

English

Alternative forms

• dizzie (obsolete)

Etymology

From Middle English disy, dysy, desi, dusy, from Old English dysi?, dyse? (“dizzy; foolish; unwise; stupid”), from Proto-Germanic *dusigaz (“stunned; dazed”). Akin to West Frisian dize (“fog”), Dutch deusig, duizig (“dizzy”), duizelig (“dizzy”), German dösig (“sleepy; stupid”).

Pronunciation

• (UK, US) IPA^(key): /?d?zi/
• Rhymes: -?zi

Adjective

dizzy (comparative dizzier, superlative dizziest)

1. Having a sensation of whirling and of being giddy, unbalanced, or lightheaded.

   I stood up too fast and felt dizzy.

   • 1627, Michael Drayton, Nimphidia, the Court of Faery

     Alas! his brain was dizzy.

2. Producing giddiness.

   We climbed to a dizzy height.

   • 1918, Edgar Rice Burroughs, The Land That Time Forgot Chapter IX

     ...faintly from the valley far below came an unmistakable sound which brought me to my feet, trembling with excitement, to peer eagerly downward from my dizzy ledge.

3. Empty-headed, scatterbrained or frivolous; ditzy.

   My new secretary is a dizzy blonde.

Derived terms

• dizzies (noun)
• dizzily
• dizziness
• dizzyingly

Translations

Verb

dizzy (third-person singular simple present dizzies, present participle dizzying, simple past and past participle dizzied)

1. (transitive) To make dizzy, to bewilder.
   • , Folio Society, 2006, vol.1, p.161:

     Let me have this violence and compulsion removed, there is nothing that, in my seeming, doth more bastardise and dizzie a wel-borne and gentle nature […].

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