insidiousness

Valid in Scrabble

Definition of insidiousness

1 sense · 1 part of speech · etymology included

(uncountable, usually)A surreptitious harmfulness, quality of entrapment, or treacherousness; the characteristic of being insidious.

“This lent a new insidiousness to his temptation, since her contempt would be a refuge from his own.”

Definitions from Wiktionary, CC BY-SA.

From insidious + -ness.

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