Ἑλλην-ικός · Hellēn-ikos — LSJ
Hellenic, Greek, Hdt. 4.108, etc.
ἑλληνική (sc. γλῶσσα), ἡ, the Greek language, Apoc. 9.11.
τὸ Ἑ. the Greeks collectively, Hdt. 7.139, al.; Greek soldiery, X. An. 1.4.13.
Greek culture, D.H. 1.89: pl., Hdt. 4.78.
τὰ Ἑ. the history of Greek affairs, Th. 1.97, etc.; title of works by X., Theopomp.Hist., etc.; Greek literature, App. BC 4.67.
like the Greeks, οὐ . . πατρῷον τόνδʼ ἐδεξάμην νόμον, οὐδʼ Ἑ. E. Alc. 684, cf. Ar. Ach. 115, Plu. Luc. 41: Comp. -ώτερος Id. Comp.Lyc.Num. 1; ἡ συγγνώμη τῆς τιμωρίας -ώτερον Lib. Ep. 75.4: Sup. -ώτατος D. 19.308, D.H. 1.89. Adv. -κῶς in Greek fashion, Hdt. 4.108, E. IT 660, Antiph. 184.
pure Greek, οὐχ Ἑ. λέξις Orus ap. Eust. 859.55, cf. Ael.Dion. Fr. 207, S.E. M. 1.187. Adv. -κῶς in pure Greek, opp. βαρβαρικῶς, Phld. Lib. p.13 O., cf. S.E. M. 1.243, Porph. Abst. 3.3.
in Hellenistic Greek, opp. Ἀττικῶς, Moer. 1, al.; but also, opp. κοινόν ‘in common speech’, Id. 347, al.
pagan, LXX 2 Ma. 4.10, al., Jul. Ep. 84a, Suid. s.v. Διοκλητιανός.