Same entry in other lexica. The headword is masculine accusative singular or neuter nominative/accusative singular of this adjective. It must be quoted from somewhere: Herodotus 2.175.5 (web address 1), according to Theodoridis on Photius, Lexicon epsilon952. (The mss of Herodotus read, inter alia, e)nqumisto/n or e)squmisto/n for the neuter accusative singular there, but editors print Bekker's e)nqumhto/n, and cf. LSJ s.v.)