χρηστός
τῶν λεγομένων τά μέν κατά συμπλοκήν λέγεται, τά δέ ἄνευ συμπλοκῆς → forms of speech are either simple or composite (Aristotle, Categoriae 1a16-17)
English (LSJ)
ή, όν, (χράομαι) of things,
A like χρήσιμος, useful, good of its kind, serviceable, [τόξα] χρηστὰ οὐδέν Hdt.3.78; [ἀτραπὸς] οὐδὲν χ. τισι Id.7.215; χ. ἐπίπλοα Id.1.94; [γῆ] E.Hec.594; οἰκία, opp. μοχθηρά, Pl.Grg.504a; ἡ χ. μέλιττα, opp. οἱ κηφῆνες, Arist.HA 624b23: freq. of wholesome food, μελίτωμα Batr.39; ποτόν, σῖτος, Pl.R.438a; περὶ τὸ σῶμα Pl.Prt.313d: c. gen., for a thing, νεύρων for the sinews, Ael.NA14.21; ῥάφανος Alex.15.8; ὄψον Antiph.242, etc. (but pleasant to taste, nice, Thphr.Char.2.10): generally, πολιτεία Isoc.12.135; βίος Aeschin.1.179; of victims and omens, auspicious, ἱρά, σφάγια, Hdt.5.44, 9.61,62; τελευτὴ χ. a happy end or issue, Id.7.157; εἰ . . τοῦτό γε δοκέει ὑμῖν εἶναι χρηστόν Id.5.92.ά: pl., τὰ χ., as Subst., benefits, kindnesses, Id.1.41, 42; χρηστὰ φέρειν Id.4.139; χρηστόν τι συμβουλεύειν, χρηστὰ ἐπιτηδεύειν, Ar.Nu.793, Antipho 3.3.9; χρηστὰ λέγειν, πράττειν, etc., Men. 725,787, etc.: but τὰ χ. also, happy event, ἐκτελοῖτο δὴ τὰ χ. A.Pers. 228 (troch.); prosperity, success, τὰ χ. δ' αὔθ' ἕκαστ' ἔχει φίλους E.Hec.1227. 2 in moral sense, opp. κακός, Eup. in PSI11.1213.2; opp. πονηρός, Pl.Prt.313d; τὸ χ., opp. τὸ αἰσχρόν, S.Ph. 476; χρηστός, opp. λυπρός, E.Med.601: but λῦπαι χρησταί if working for good, Pl.Grg.499e. 3 good for its purpose, effective (even for evil), τραῦμα, δῆγμα, Luc.Symp.44, Alex.55. 4 Gramm., in use, current, ποιηταῖς χρηστά Eust.215.8. II of persons, good, esp. in war, valiant, true, Hdt.5.109, 6.13, S.Ph.437, etc.: generally, good, honest, worthy, Id.OT610; οἰκέται X.Oec.9.5; of women, ἐρεῖ τις ὡς Κλυταιμνήστρα κακή· Ἄλκηστιν ἀντέθηκα χρηστήν Eub. 117.11, cf. Men.Mon.634; of good citizens, useful, deserving, D.20.7: c. acc. cogn., ἃ χρηστοὶ ἐγένεσθε Th.3.64; χ. περὶ τὴν πόλιν γεγενημένος Lys.14.31; χ. καὶ φιλόπολις Ar.Pl.900; collectively, ὀλίγον τὸ χ. Id.Ra.783; but also ironically, ὁ χ. οὑτοσί Id.Nu. 8; οἱ χ. πρέσβεις οὗτοι D.18.30, cf. 89; ἐκλελάκτικεν ὁ χ. ἡμῖν μοιχός Men.16. b freq. on Epitaphs, IG3.3149,3155, al. c c. inf., ὅσοι προβατεύειν χ. Him.Or.14.32. 2 οἱ χρηστοί, like οἱ ἀγαθοί, those of good family, X.Ath.1.4,6. 3 of the gods, propitious, merciful, bestowing health or wealth, θεῶν χρηστῶν ἥκειν εὖ Hdt.8.111, cf. M.Ant.9.11. 4 of men, good, kindly, δούλῳ . . χ. γενόμενός ἐστι δεσπότης πατρίς Antiph.265; ὡς ἡδὺ δούλῳ δεσπότου χρηστοῦ τυχεῖν Men.Mon.556, cf. Philem.227; ὁ χ., ὡς ἔοικε, καὶ χρηστοὺς ποιεῖ Men.203b, cf. Plu.Phoc.10; χ. περί τινα D.59.2; ἐπί τινας Ev.Luc.6.35; εἰς ἀλλήλους Ep.Eph.4.32. b sts. simple, silly, like εὐήθης, χρηστὸς εἶ ὅτι ἡγῇ... you're a nice fellow, to think that... Pl.Phdr.264b, cf. Tht.161a; ὦ χρηστέ D.18.318. 5 of a man, strong, able in body for sexual intercourse, = γυναικὶ χρῆσθαι δυνάμενος, Hp.Genit.2. 6 of the dead, whence χρηστὸν ποιεῖν = ἀποκτιννύναι, in a treaty between the Spartans and Tegea, Arist.Fr. 592. III Adv. -τῶς well, properly, Hdt.4.117, Hp.Art.32; χ. ἔχειν Ar.Ec.219; σκευάσαι χ. τοὖψον Alex.149.6.: ironically, χ. τὴν πατρίδα ἐπετρόπευσας Hdt.3.36.