ἄκρος ἀκή I at the furthest point, and so either topmost = Lat. summus, or outermost = Lat. extremus: highest, topmost, ἐν ἄκρηι πόλει ἐν ἀκροπόλει, Il.; μέλαν ὕδωρ ἄκρον at its surface, Il., etc. outermost, ἄκρη χείρ, ἄκροι πόδες, ἄκρος ὦμος the end of the hand, ends of the feet, tip of the shoulder, Il., Thuc.; ἐπʼ ἄκρων δακτύλων on tiptoe, Soph.; ἄκροισι λαίφους κρασπέδοις with the outermost edges of the sail, i. e. under close-reefed sails, Eur. of Time, it denotes completeness, ἄκραι σὺν ἑσπέραι when eve was fully come, Pind.; ἄκρας νυκτός at dead of night, Soph. of Degree, the highest in its kind, exceeding good, consummate, excellent: of persons, Hdt., etc.; ἄκρος μάντις Soph.:—often with an acc. modi added, ψυχὴν οὐκ ἄκρος not strong in mind, Hdt.; ἄκροι τὰ πολέμια, skilful in war, Hdt., etc.; also c. gen. modi, οἱ ἄκροι τῆς ποιήσεως Plat.; also, ἄκρος εἰς or περί τι Plat. as Subst., v. ἄκρα, ἄκρον. neut. as adv. on the top or surface, just, ἄκρον ἐπὶ ῥηγμῖνος on the very edge of the surf, il. exceedingly, Theocr. utterly, completely, Plat.