perniciously definition July 20, 2017 AZ Dictionary Link to this page adverb: In a pernicious fashion. in a noxiously baneful method in a harmfully insidious manner View More others: In a pernicious or upsetting fashion; destructively; with ruinous tendency or result. Maliciously; malignantly. View More Related Sources Definition for "perniciously" In a pernicious fashion. View More Sentence for "perniciously" It affects how we think about… View More How would you define perniciously? All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own! Your Full Name Your definition Post Definition
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