LogeionPerseus analysis of θέμιστας:
θέμις (that which is laid down): fem acc pl
LSJ entry
θέμις
θέμις,
ἡ,
old Ep. gen. θέμιστος (in Hom. the only declension): acc. θέμιστα Il. 5.761,
θέμιν A. Ag. 1431,
etc.: gen. pl. θεμιστέων Hes. Th. 235:
pr. n. Θέμις, Θέμιστος Od. 2.68,
Θέμιστα Il. 20.4;
dat. Θέμιστι 15.87;
but Θέμιτος Pi. O. 13.8,
Θέμιδος A. Pr. 18,
etc., Θέμιος (v.l. -ιδος) Hdt. 2.50,
Θέμιν Hes. Th. 16,
IG 22.1611.71:
voc. Θέμι Il. 15.93,
E. Med. 160(anap.): I. that which is laid down or established, law (not as fixed by statute, but) as established by custom,
θ. ἐστί ʼtis meet and right,
c. dat. pers. et inf.,
οὔ μοι θ. ἐστὶ ξεῖνον ἀτιμῆσαι Od. 14.56;
ἅ τε ξείνοις θ. ἐστὶν [παραθεῖναι]
Il. 11.779;
ὅ οἱ Διόθεν θ. ἦεν [ἐκτελέσαι]
Hes. Sc. 22;
γυναικὶ οὐ θ.
SIG 1024.9(Myconos,iii/ii B.C.):
without dat., Il. 16.796,
23.44;
οὐ θ. ἐν μοισοπόλων οἰκίᾳ θρῆνον ἔμμενʼ Sapph. 136;
ὅτι δυνατὸν καὶ θ. αἰνεῖν A. Ag. 98,
cf. S. Ant. 880(lyr.), Ph. 346,
E. Med. 678,
Pl. Phdr. 250b,
Isoc. 4.92,
etc.; ἡ γὰρ θ.
for so ʼtis right [to do], Od. 24.286;
freq. ἣ θ. ἐστί as the custom is, Il. 2.73:
c. dat. (=
loc.), ἣ θ. ἐστίν . . ἀγορῇ 9.33:
c. gen., ἣ θ. ἀνθρώπων πέλει ib.134;
ἣ θ. ἐστὶ γυναικός Od. 14.130;
also ᾗ θ. ἀνθρώποις κατὰ ἤθεα Hes. Op. 137;
θύειν τοὺς γεωργοὺς . . ᾗ (with ι)
θέμις IG 22.1364
(i A.D.);
but ᾗ θέμις ἐστί is rejected for Hom. by Hdn.Gr.2.516,
cf. A.D. Adv. 148.28:
indecl.,
πότερα κατʼ ἔχθραν ἢ τὸ μὴ θέμις λέγεις;
A. Supp. 336;
ὥστε μὴ . . θέμις σέ γʼ εἶναι κεῖνον ἀντιδρᾶν κακῶς S. OC 1191;
οὐδὲ . . φασὶ θέμις εἶναι Pl. Grg. 505c,
cf.X. Oec. 11.11,
Ael. NA 1.60.