μεγαλόφωνος
From LSJ
μισῶ σοφιστὴν ὅστις οὐχ αὑτῷ σοφός → I hate the sage who recks not his own rede, I hate the sage who is not wise for himself, I hate the wise man who is not wise on his own
English (LSJ)
ον,
A loudvoiced, Hp.Epid.6.4.19 (Sup.), Arist.GA787a12, Pr.899a9: Comp. -ότερος Luc.Bis Acc.11: Sup. -ότατος D.S.11.34. Adv. -νως Poll. 2.113, Suid. s.v. τορόν. 2 loud-talker, bawler, D.19.238. 3 grandiloquent, Philostr.VS2.10.1; ποιητής Id.Ep.16; ὁ -ότατος, of Pindar, Ath.13.564d; of Homer, Luc.Musc.Enc.5.