pestilent
/-ənt; -ənt/ (also pestilential / ˌpestɪˈlenʃl; ˌpɛstl`ɛnʃəl/) adj
1 of or like a pestilence （似）瘟疫的, 腺鼠疫的.
2 [attrib 作定语]
(infml 口) very irritating 极讨厌的; 极恼人的; 极可恶的
the pestilential noise of aeroplanes coming in to land 飞机著陆的讨厌噪音
We must get rid of these pestilential flies. 我们得把这些可恶的苍蝇消灭掉.