irrational

Meaning

Adj

1. Not rational; unfounded, nonsensical or wrong-headed.
2. (not-comparable) Of a real number, that cannot be written as the ratio of two integers.

Noun

A real number that can not be expressed as the quotient of two integers, an irrational number.

Opposite of

rational

Synonyms

unreasonable

illogical

absurd

preposterous

irrational number

unreasoning

senseless

reasonless

surd

thoughtless

inconsistent

nonsensical

delusional

crazy

indefensible

injudicious

insupportable

absonant

laughable

mad

radical

ridiculous

unconscionable

unethical

unjustifiable

unwarranted

crazy person

not sentient

pappyshow

ridonkulous

invalid

blind

bonkers

brutish

crackbrained

defective

derisive

derisory

dumb

farcical

foolish

immoral

imprudent

inanimate

Translations

irrationnel

irrational

irracional

irrazionale

irracional

irrationeel

άρρητος

irracional

akılsız

irrationaal

onredelijk

onzinnig

mantıksız

Pronounced as (IPA)

/ɪˈɹæʃ.(ə.)nəl/

Etymology

From Latin irratiōnālis, from ir- + ratiōnālis.