pernicious
🇺🇸
/pərˈnɪʃəs/
🇬🇧
/pəˈnɪʃəs/
adjective
R
causing serious harm in a way that is not immediately obvious
The pernicious effects of pollution on the environment are becoming more evident every day.
汚染の環境への有害な影響は、日々より明らかになっています。
translation
有害な