δυσθεώρητος
From LSJ
τὸν αὐτὸν ἔρανον ἀποδοῦναι → pay him back in his own coin, repay him in his own coin, pay someone back in their own coin, pay back in someone's own coin, give tit for tat, pay back in kind
English (LSJ)
ον,
A hard to observe, Arist.HA511b13; scarcely visible, τρύπημα Hero Spir.1.31, cf. Philum.Ven.15.6. II hard to understand or reduce to theory, τέχνη Ph.Bel.49.19, cf. Plb.3.31.7, Phld.Rh.1.141 S., Ph.2.84.
German (Pape)
[Seite 681] schwer zu untersuchen, zu betrachten; Arist. H. A. 3, 2; Pol. 17, 13 u. sonst; Plut. S. N. V. 4.
Greek (Liddell-Scott)
δυσθεώρητος: -ον, ὃν δύσκολον εἶναι νὰ θεωρήσῃ τις ἢ ἐννοήσῃ, Ἀριστ. Ἱστ. Ζ. 3. 2, 2.