The headword is imperfect indicative middle/passive, second person singular, of e)pigra/fw. For other forms of the same verb see epsilon 2025, epsilon 2026, epsilon 2272, epsilon 2273, epsilon 2274 and further on in this entry.
[1] Aristophanes, Acharnians 1095 (web address 1), with comment from the (uncomprehending) scholia there. The scholia focus on the literal level (Lamachos has had a gorgon inscribed on his shield), while the wordplay (cf. LSJ: web address 2) involves an sense of the verb e)pigra/fomai that in this case is metaphorical: Lamachos [lambda 81] is "enlisted under" the Gorgon (as a symbol of belligerence) the way a metic gets himself enlisted under a prostates. This sense becomes fully explicit in the remainder of the entry; and cf. gamma 392.
[2] Aorist indicative middle/passive, third person singular, of the same verb.
[3] The meanings 'voted', 'established' are more frequently attested for the active forms of the verb. See web address 2.
[4] From the scholia to Aristophanes, Peace 684 (web address 3), where e)pegra/yato occurs. Athens' resident aliens (metics) were required to enroll themselves officially with a citizen patron (prostates). See generally mu 820, nu 166, pi 2809. The usage is metaphorical here in that it is applied to the relationship between the Athenian people and the popular leader Hyperbolos, which was not officially that of patron and client.