LSJ
η, ον, best in counsel, epith. of Artemis at Melite, Plu. Them. 22, cf. Artem. 2.37; at Rhodes, Porph. Abst. 2.54; — hence Ἀριστοβουλιασταί, οἱ, a confraternity of her worshippers, IG 12(1).163 (Rhodes).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
(βουλή), am besten ratend, dazu fem. ἀριστοβούλη Beiname der Artemis, Plut. Them. 22. Bei Artemidor. 2.37 nom. pr. = Νέμεσις.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)