unhelpful
US /ʌnˈhelp.fəl/
UK /ʌnˈhelp.fəl/

1.
inútil, não útil
not helpful; not providing assistance or support
:
•
His comments were completely unhelpful.
Os comentários dele foram completamente inúteis.
•
The instructions were so unhelpful that I couldn't assemble the furniture.
As instruções eram tão inúteis que não consegui montar os móveis.