изнурительный angolul

gruelling▼(so difficult or taxing as to make one exhausted)
adjective
[UK: ˈɡruːəl.ɪŋ] [US: ˈɡruːəl.ɪŋ]

tiring▼(that tires or tire)
adjective
[UK: ˈtaɪər.ɪŋ] [US: ˈtaɪr.ɪŋ]