ἄκλονος
From LSJ
περὶ οὐδὲν γὰρ οὕτως ὑπάρχει τῶν ἀνθρωπίνων ἔργων βεβαιότης ὡς περὶ τὰς ἐνεργείας τὰς κατ' ἀρετήν → since none of man's functions possess the quality of permanence so fully as the activities in conformity with virtue
English (LSJ)
ἄκλονον, of the pulse, steady, regular, Gal.9.347; of a limb, free from jars, 17(1).513; of a rider, with a firm seat, Palaeph.52.
Spanish (DGE)
-ον
firme, sin altibajos o sacudidas del pulso, Gal.9.347, κῶλον Gal.17(1).513.
Greek (Liddell-Scott)
ἄκλονος: -ον, ὁ μὴ κλονιζόμενος, Γαλην. τόμ. 9. 205.