Английский разговорный словарь (основной) - pestilential
Pestilential
pestilential
ˌpestɪˈlenʃəl adj. 1 of or relating to pestilence. 2 dangerous; troublesome; pestilent. øøpestilentially adv. [ME f. med.L pestilentialis f. L pestilentia (as PESTILENT)]