2EaTj suff. victor
1. See Hyarmendacil, Romendacil, Umbardacil.
2. In Sindarin, it would be degil, which is only found as part of a compound (Findegil).
3. It is probable that -cil itself is an ending, meaning "person"/"man"(such as in tarcil, meaning "king's-man" in Quenya), "-er"/"-or" (such as in -dacil, meaning victor). Also seen in macil, a Quenya noun with unknown translation found only in compounds (Calimacil, Narmacil). Note on macil: Sindarin form would be megil (translation unknown), as seen integrated into the compound names Arvegil and Malvegil.