insidiousness

英 [ɪn'sɪdiəsnəs] 美 [ɪn'sɪdiəsnəs]

• n. 隐伏(阴险；在不知不觉之间加剧)

英英释义

Noun:

1. subtle and cumulative harmfulness (especially of a disease)

2. the quality of being designed to entrap