insidious
/ɪnˈsɪdɪəs/adjective
- proceeding in a gradual, subtle way, but with very harmful effects潜伏的; 隐患的：
sexual harassment is a serious and insidious problem.
性骚扰是一个恶劣且有潜在恶果的问题。
派生词
insidiously
adverbinsidiousness
noun词源
mid 16th cent.: from Latin insidiosus 'cunning', from insidiae 'an ambush or trick', from insidere 'lie in wait for', from in- 'on' + sedere 'sit'.