LSJ
ον, (< ἀράομαι) prayed for by the people; hence as pr. n. of a king of Sparta, Hdt. 5.75 (in Ion. form -άρητος), etc., cf. Eust. 1093.57.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
[ρᾱ], vom Volke erfleht, Eust.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)