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    Irracional (en. Irrational)

    /ir-ra-si-o-nal/

    Meaning & Definition

    EnglishSpanish
    adjective
    Not based on reason or logical sense.
    His reaction was completely irrational.
    Su reacción fue completamente irracional.
    Said of a person: One who acts without reason or logic.
    It is irrational to trust him after what he did.
    Es irracional confiar en él después de lo que hizo.
    One that cannot be expressed as a fraction of integers.
    The number π is an irrational number.
    El número π es un número irracional.

    Etymology

    From the Latin 'irrationalis', composed of 'in-' (no) and 'rationalis' (rational).

    Common Phrases and Expressions

    irrational decision
    A decision made without considering logic or reason.
    decisión irracional
    irrational behavior
    Attitude that does not follow a logical pattern.
    comportamiento irracional
    irrational number
    A number that cannot be represented as a fraction.
    número irracional

    Related Words

    rational
    Based on reason.
    racional
    logical
    That conforms to logic.
    lógico

    Slang Meanings

    Makes no sense.
    That argument is completely irrational.
    Ese argumento es completamente irracional.
    Acting without thinking.
    Be careful, your plan seems quite irrational.
    Cuidado, tu plan parece bastante irracional.