unfashionable
US /ʌnˈfæʃ.ən.ə.bəl/
UK /ʌnˈfæʃ.ən.ə.bəl/

1.
pasado de moda, anticuado
not in fashion; not popular or current
:
•
His clothes were old and unfashionable.
Su ropa era vieja y pasada de moda.
•
It's considered unfashionable to wear socks with sandals.
Se considera pasado de moda usar calcetines con sandalias.