What does “majadero” mean in Spanish?

Majadero brands someone as not just foolish but pig-headed and wearisome with it — a step up from plain tonto. The related noun majaderías means the nonsense or tiresome chatter such a person produces; “temas majaderos” are crude, vexing topics. It’s a notch literary, common in pointed commentary and polemic where the speaker wants both bite and a touch of formality.

The image underneath is physical: majadero originally named the pestle that pounds (majar) in a mortar — so the insult casts the fool as someone who machaca, hammering away dully and obstinately. That etymology is why it carries “wearing you down” rather than mere stupidity. In much of Latin America majaderear also means to pester or nag.