ἶθύς
τούτων γάρ ἑκάτερον κοινῷ ὀνόματι προσαγορεύεται ζῷον, καί ὁ λόγος δέ τῆς οὐσίας ὁ αὐτός → and these are univocally so named, inasmuch as not only the name, but also the definition, is the same in both cases (Aristotle, Categoriae 1a8-10)
English (Autenrieth)
εῖα, ύ: straight; τέτραπτο πρὸς ἰθύ οἱ, ‘straight opposite him,’ Il. 14.403; usually metaph., straight, right, just, Il. 23.580; sup., ἰθύντατα, most fairly, Il. 18.508.—As adv., ἶθύς, ιθύ, straight at, straight for, τινός, Il. 5.849; also with prepositions, and abs., Il. 20.99, Od. 3.10 ; ἶθὺς φέρειν, μάχεσθαι, φρονεῖν, ‘turn the mind straight on,’ ‘be bent on battle,’ Il. 13.135, cf. Il. 11.95.
ύος: straight course, ἀν' ἰθύν, ‘straight up,’ ‘straight on,’ Il. 21.303, Od. 8.377; hence ‘attack,’ ‘tendency,’ ‘disposition,’ Il. 6.69, Od. 4.434, Od. 16.304.
