pernicious
1 ENTRIES FOUND:
Britannica Dictionary definition of PERNICIOUS
[more pernicious; most pernicious]
formal
:
causing great harm or damage often in a way that is not easily seen or noticed
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More pernicious still has been the acceptance of the author's controversial ideas by the general public.
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the pernicious effects of jealousy
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She thinks television has a pernicious influence on our children.
