 pernicious |
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| 1. | [ adjective ] exceedingly harmful | |
| Synonyms: | deadly pestilent baneful | |
| Related terms: | noxious | |
| 2. | [ adjective ] working or spreading in a hidden and usually injurious way | |
| Synonyms: | subtle insidious | |
| Examples: | "glaucoma is an insidious disease" "a subtle poison" |
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| Related terms: | harmful | |
| Similar spelling: |
perniciously Pernice Perrins pernickety |
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