ἑτεροκλινής
From LSJ
ἄνω ποταμῶν ἱερῶν χωροῦσι παγαί → the springs of sacred rivers flow upward, backward to their sources flow the streams of holy rivers
English (LSJ)
ές,
A leaning to one side, uneven, Hp.Art.24; of a building, D.C.57.21; τὰ ἑ. τῶν χωρίων sloping ground, X. Cyn.2.7. Adv. -νῶς one-sidedly, Sor.2.62; ἑ. ἔχειν πρὸς ἡδονήν to have a propensity to it, Arr.Epict.3.12.7.