хълмист означава в английски

billowy▼(full of billows or surges)
adjective
[UK: ˈbɪ.ləʊɪ] [US: ˈbɪlo.ʊɪ]

hilly [hillier, hilliest]▼(abounding in hills)
adjective
[UK: ˈhɪ.li] [US: ˈhɪ.li]

rolling▼(undulating of the landscape)
adjective
[UK: ˈrəʊl.ɪŋ] [US: ˈroʊl.ɪŋ]