irrational

About 5.09 uses per million words.

Meaning

1. adjective Not rational; unfounded, nonsensical or wrong-headed.

   an irrational decision

2. adjective Of a real number, that cannot be written as the ratio of two integers.

   The number π is irrational.

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

Similar words

unreasonable unreasoning incoherent reasonless nonrational blind superstitious jaundiced yellow illogical

Often followed by

and beliefs to or numbers in fear behavior fears

Word family

irrationalities irrationality irrationally irrationals