insidiousness

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. subtle and cumulative harmfulness (especially of a disease)
• Derivationally related forms:
insidious
• Hypernyms:
harmfulness, injuriousness
2. the quality of being designed to entrap
• Derivationally related forms:
insidious
• Hypernyms:
perfidy, perfidiousness, treachery