inútil
/iˈnutil/ · A2 · adj
useless, pointless
🗑️ in- (not) + útil (useful, like utility) = not useful
From Latin inutilis: in- (not) + utilis (useful), the same root as English utility and utensil. English once had the twin word inutile. As a noun, un inútil is a person who is no use at anything.