ἀπτής

From LSJ

πᾶς ὁ ὑψῶν ἑαυτὸν ταπεινωθήσεται καὶ ὁ ταπεινῶν ἑαυτὸν ὑψωθήσεται → for everyone who exalts himself will be humbled, and he who humbles himself will be exalted (Luke 14:11)

Source

Spanish (DGE)

-ές que no se cae, sólido, firme, IO 164 (IV a.C.).