ἄχρησ-τος, ον,
useless, unprofitable, μετάνοια[[ Batrachomyomachia 70; νέες 5th c.BC: Herodotus Historicus 1.166; ἄ. ὁ ὀφθαλμὸς γίνεται 5th c.BC: Hippocrates Medicus “προρρητικόν” 2.19; οὐκ ἄ. ἥδ᾽ ἡ ἄνοια 5th c.BC: Thucydides Historicus 6.16] Refs 5th c.BC+]; χρεομένῳ ἄχρηστα useless if you try to use them, [[ 5th c.BC: Hippocrates Medicus “περὶ ἄρθρων ἐμβολῆς” 14; πεσεῖν ἄ. θέσφατον ] Refs 5th c.BC+]without effect, [[ 5th c.BC: Euripides Tragicus “Iphigenia Taurica” 121; ἄ. ἐς πόλεμον 5th c.BC: Herodotus Historicus 8.142, 4th c.BC: Lycurgus Orator 53; πρός τι 4th c.BC: Aristoteles Philosophus “Historia Animalium” 560b14: with _genitive_ _of things_, ἄ. τῶν ἔργων [prev. author] “Oec.” 1345a35] Refs 5th c.BC+]; ἄ. τινι useless to a person, [[ 5th c.BC: Herodotus Historicus 1.80, compare 5th-6th c.BC: Xenophon Historicus “Oeconomicus” 8.4 (_superlative_)] Refs 5th c.BC+]; τῇ πόλει[[ 5th c.BC: Euripides Tragicus “Heraclidae” 4; τὸ διηπορηκέναι οὐκ ἄ. 4th c.BC: Aristoteles Philosophus “Categoriae” 8b24. ] Refs 5th c.BC+]
__2 ={ἀχρεῖος} (which it almost superseded in the Oratt. and later Greek), useless, do-nothing, [[ 4th c.BC: Demosthenes Orator 19.135 (_comparative_), etc.] Refs 4th c.BC+]; ἄ. πολῖται[[ 4th c.BC: Isaeus Orator 7.37] Refs 4th c.BC+]; σοφισταί probable reading in [[ 5th c.BC: Lysias Orator 33.3] Refs 5th c.BC+]; non-effective, unwarlike, Eun.Hist.p.239D.; so (with a pun—not having received an oracle) [[ 2nd c.AD: Athenaeus Epigrammaticus 3.98c] Refs 2nd c.AD+]. adverb -τως, ἔχειν πρός τι[[ 4th c.BC: Demosthenes Orator 61.43. ] Refs 4th c.BC+]
__II unkind, cruel, θεοί[[ 5th c.BC: Herodotus Historicus 8.111; λόγος [prev. author] 9.111. ] Refs 5th c.BC+]