odolný znamená v angličtina

hardy [hardier, hardiest]▼(inured to fatigue or hardships)
adjective
[UK: ˈhɑː.di] [US: ˈhɑːr.di]

resistant▼(that which is not overcome by a disease or drug)
adjective
[UK: rɪ.ˈzɪ.stənt] [US: rə.ˈzɪ.stənt]