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“perniciously”
perniciously (adverb), more perniciously, most perniciously
1. In a manner that is destructively, ruinously or wickedly performed: Gertrude thinks that some television programs have a perniciously negative influence on her children.
2. Deadly; fatal: There has been a perniciously dangerous disease spreading throughout the local community.
2. Deadly; fatal: There has been a perniciously dangerous disease spreading throughout the local community.
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neci-, nici-
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