The normal way to put this is to substantivize the participle: hO
APOKTEINWN, which can, of course, be inflected: TOU APOKTEINONTOS, etc.
There are also, of course, standard suffixes that can be used with verbal
stems/roots such as -EUS (3rd decl.): GRAMMATEUS, GRAFEUS, -WR & -HR (3rd
decl): hRHTWR, KOSMOKRATWR; -THS (1st decl.): POIHTHS, NAUTHS, KLEPTHS,
KTISTHS, etc. For "killer" the only word that I think may appear in the NT
is FONEUS, "murderer."
Carl W. Conrad
Department of Classics, Washington University
One Brookings Drive, St. Louis, MO, USA 63130
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