hardcore(resistant to change) adjective [UK: ˌhɑːdˈk.ɔː(r)] [US: ˈhɑːrdˈk.ɔːr]
hardy [hardier, hardiest](inured to fatigue or hardships) adjective [UK: ˈhɑː.di] [US: ˈhɑːr.di]
resilient(able to withstand force without cracking; elastic) adjective [UK: rɪ.ˈzɪ.lɪənt] [US: rə.ˈzɪ.ljənt]I'm pretty resilient. = Soy bastante resistente.
resistant(that which makes resistance) adjective [UK: rɪ.ˈzɪ.stənt] [US: rə.ˈzɪ.stənt]I am resistant to cold. = Soy resistente al frío.
strong [stronger, strongest](capable of withstanding great physical force) adjective [UK: strɒŋ] [US: ˈstrɒŋ]Although the web looks soft and delicate, it is strong. = Aunque la red parezca suave y delicada, es resistente.
tough [tougher, toughest](rugged or physically hardy) adjective [UK: tʌf] [US: ˈtəf]Metal cases are undoubtedly tougher, but much more expensive. = Las cajas de metal son sin lugar a dudas más resistentes, pero mucho más caras.
resistentenoun {m}
resistant(a person who resists) noun [UK: rɪ.ˈzɪ.stənt] [US: rə.ˈzɪ.stənt]I am resistant to cold. = Soy resistente al frío.