Piacular

• (a.) Expiatory; atoning. • (a.) Requiring expiation; criminal; atrociously bad.
Found on http://thinkexist.com/dictionary/meaning/piacular/

Piacular

Pi·ac'u·lar adjective [ Latin piacularis : confer French piaculaire .] 1. Expiatory; atoning. Sir G. C. Lewis. 2. Requiring expiation; criminal; atrociously bad. ' Piacular pollution.' De Quincey.
Found on http://www.encyclo.co.uk/webster/P/82

piacular

expiatory; atrociously bad
Found on http://phrontistery.info/p.html
No exact match found