duro1. adjectivo hard; stiff; resistant; hardened; abrasive; rude.2. adjectivo hard; tough.3. adjectivo tough; stiff; violent; raw; vigorous.4. adjectivo hard; cruel; brutal; grasping; insensible; insensitive.5. adjectivo hard; harsh; severe; unkind.6. nome hard-liner; hard-hearted man; insensible person; duro.