What is another word for insidiousness?
Pronunciation: [ɪnsˈɪdɪəsnəs] (IPA) 
Insidiousness refers to a process that takes place gradually and secretly, but which often has serious negative consequences. Synonyms for insidiousness may include stealthiness, cunning, deceit, slyness, trickery, deceitfulness, mischievousness, and subterfuge. These words all describe the idea of something being done in a secretive or underhanded way, with the intention of harming others. Other synonyms for insidiousness might include malice, malevolence, and ill-intent, which all suggest a more deliberate intention to cause harm. Ultimately, the synonyms for insidiousness all point to a sense of hidden danger or threat, where things are not always as they seem.
