ἐπιχειρ-έω · epicheir-eō — LSJ
put oneʼs hand to, οἱ μὲν δείπνῳ ἐπεχείρεον Od. 24.386, cf. 395; πηδαλίοις Ar. Eq. 542.
put oneʼs hand to a work, set to work at, attempt, τῇ διώρυχι Hdt. 2.158 ; δρησμῷ ἐ. attempt an escape, Id. 6.70 ; τῇ ὁδῷ Id. 7.43, cf. E. Ba. 819 ; τοῖσι βασιληΐοισι Hdt. 3.61 ; τυραννίδι Id. 5.46 ; ἔργῳ τοσούτῳ Id. 9.27 ; λόγοις, τέχνῃ, Pl. Phdr. 279a, Grg. 521d, etc.; τοῖς ἀδυνάτοις X. Mem. 2.3.5, cf. Isoc. 5.41, etc.
less freq. c. acc., μεγάλα ἔργα Thgn. 75 ; δίκαιον πρᾶγμα Pl. Cri. 45c, Phlb. 57b:—Pass., to be attempted, Th. 4.55, 6.31, X. Cyr. 6.1.41, etc.; τὸ ἐπιχειρούμενον the thing attempted, Pl. Lg. 746b.
c. inf., endeavour, attempt to do, Hdt. 3.38, 65, 9.42, Ar. Ra. 81, Th. 2.40, etc.: c. fut. inf., J. BJ 6.7.3:—Pass., ἃ τὸ πρῶτον ἐπεχειρήθη πραχθῆναι Pl. Ep. 337d, cf. Id. Ti. 53a, al.
ἐπεχειρήθη c. dat., an operation was performed, τῇσιν αἱμορροΐσι Hp. Epid. 5.20.
make an attempt on, attack, τινι Hdt. 1.11, 26, 190, Th. 3.94, Ar. V. 1030, etc.; πρός τινα Th. 7.21 ; ἐπί τινα Pl. Mx. 241d (but ἐπὶ τὴν τοῦ σώματος διαφθοράν with a view to.., Arist. Pol. 1315a24); εἰς τὰς σατραπείας D.S. 14.80: abs., Hdt. 5.72, 8.108, etc.; κτείνων ἢ ἐπιχειρῶν Lex ap. And. 1.98:—Pass., Th. 2.11.
sens. obsc., ἐ. μειρακίοις Jul. Mis. 359d.
attempt to prove, argue dialectically, Pl. Tht. 205a, Hermog. Inv. 3.4; περί τινος Arist. Top. 101a30; ἔκ τινος from a topic, ib. 115a26 ; ἔς τι D.L. 4.28 ; ἐ. ὅτι.. Arist. Top. 128b26 : abs., Id. APr. 66a34 ; λογικώτερον ἔστιν ἐπιχειρεῖν ὧδε Id. Cael. 275b12.