"Culprit", meaning the guilty party, evolved from this adjective meaning "guilty"
The post-positive adjectives in many legal noun phrases in 
Englishattorney general ... abbreviation of Culpable: prest (d'averrer nostre 
bille), meaning "guilty, .... L'Evolution du Verbe en Anglo-Franais, XIIe-XIVe 
Sicles by F. J.... [DOC] [TLE] Evidence of a Third Party's Guilt of the Crime that the Accused is ... [PAR] Oct 9, 2015 ... Los Angeles police had been guilty of a rush to judgment.2 Cochran ....