irrational

• Descreve pensamentos, ações ou crenças que não se baseiam na razão ou na lógica; também pode indicar algo ilógico, absurdo ou desprovido de sensatez.

Describes thoughts, actions, or beliefs that are not based on reason or logic.

1. Not logical or reasonableB2formal

   Not based on reason, logic, or clear thinking; contrary to rational thought.

   Irracional

   • His fear of spiders is completely irrational.
   • She made an irrational decision without considering the consequences.
   • The argument was based on irrational assumptions.

   Sinônimosabsurdfoolishillogicalmindlessnonsensicalsenselessunreasonableunthinkingunwise

   Antônimoscogentcoherentlogicalrationalreasonablesensiblesound

2. MathematicsC1formalscientific

   A number that cannot be expressed as a simple fraction; not rational.

   Irracional

   • The square root of 2 is an irrational number.
   • Pi is an irrational number with infinite non-repeating decimals.
   • Irrational numbers cannot be written as a ratio of two integers.

   Sinônimosincommensurablenonrationalsurd

   Antônimosrational

• Substantivo que designa um número real que não pode ser expresso como a razão entre dois números inteiros, como a raiz quadrada de 2 ou o número pi. Em sentido mais amplo, refere-se a uma grandeza que não é comensurável com outra ou a algo que não pode ser expresso como fração.

A noun referring to a real number that cannot be expressed as a ratio of two integers, such as the square root of 2 or pi.

1. Irrational numberC1formalscientific

   A real number that cannot be expressed as a ratio of two integers; its decimal representation is non-terminating and non-repeating.

   Número irracional

   • Pi (π) is an irrational number.
   • The square root of 2 is irrational.
   • Euler's number e is an example of an irrational number.

   Sinônimosirrational numbersurd

   Antônimosrational