irrational

S2 W2

BrE /ˈɪrətʃənəl/ AmE /ˈɪrəʃənəl/

adjective en → es

1 UNREASONABLE [attributive, predicative] B1

not based on reason or logic; not sensible or practical

irracional, insensato, absurdo

Collocations irrational fear · irrational behavior

His refusal to accept the facts was completely irrational.

Su negativa a aceptar los hechos fue completamente irracional.

2 MATHEMATICS [attributive] C1

relating to numbers that cannot be expressed as fractions and have never-ending, non-repeating decimal forms

irracional (en matemáticas)

The square root of 2 is an irrational number.

La raíz cuadrada de dos es un número irracional.