férreo angolul

ferrous▼(of or containing iron)
adjective
[UK: ˈfe.rəs] [US: ˈfe.rəs]

iron▼(strong, inflexible)
adjective
[UK: ˈaɪən] [US: ˈaɪərn]He's a man with an iron will. = Él es un hombre con una voluntad férrea.

ironlike▼adjective