Found 2 items, similar to insidiousness.
English → English (WordNet) Definition: insidiousness insidiousness n 1: subtle and cumulative harmfulness (especially of a disease) 2: the quality of being designed to entrap
English → English (gcide) Definition: insidiousness insidiousness \insidiousness\ n. A subtle and cumulative harmfulness, especially of a disease. [WordNet 1.5] 2. the quality of being designed to entrap. [WordNet 1.5]