τάχος τάχος, ος, εος, τό, τᾰχύς swiftness, speed, fleetness, velocity, Il., Plat. τ. φρενῶν quickness of temper, hastiness, Eur. τάχος is often used in Adverbial phrases for ταχέως, absol. in acc., Aesch., etc.: —with Preps., ἀπὸ τάχους Xen.; διὰ τάχους Soph., etc.; ἐν τάχει Aesch., etc.; εἰς τάχος Xen., etc.; κατὰ τάχος Hdt., Thuc.; μετὰ τάχους Plat.; σὺν τάχει Soph.:—also with relatives, ὡς τάχος, like ὡς τάχιστα, Hdt., Aesch.; so, ὅ τι τάχος Hdt., Soph.; ὅσον τάχος Soph.:—also, ὡς τάχεος εἶχεν ἕκαστος as each was off for speed, i. e. as quickly as they could, Hdt.; ὡς εἶχον τάχους Thuc.