PIACULAR

piacular. Piacular, a. very wicked, atrocious, expiatory

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Pi‐ac″u‐lar (?), a. [[L. piacularis: cf. F. piaculaire.]] 1. 1. Expiatory; atoning. Sir G. C. Lewis.
2. 2. Requiring expiation; criminal; atrociously bad. “Piacular pollution.” De Quincey.