ἰσχυρίζομαι

English (LSJ)

fut.

   A -ῐοῦμαι Lys.6.35, Isoc.17.24: aor. ἰσχῡρῐσάμην Th.5.26, Pl.Grg.489c:—make oneself strong, be strong, ἰσχυριζόμενος ὑφ' ἵππων σίδηρος gaining force from the impetus of the horses, X.Cyr.6.4.18.    II use one's strength, τῷ σώματι Pl.l.c.; esp. in overcoming resistance, πρὸς τὸ πολὺ ἧττον Arist.Pr.951a13; εἰς τοὺς ἀσθενεῖς Id.EN1124b23; contend stoutly, ὑπὲρ ἄθλων Ael.NA 15.15; persist or continue obstinately in doing... c. part., Th.7.49: abs., ibid.; esp. by word of mouth, maintain stiffly, obstinately, c. acc. et inf., Id.3.44, Is.11.1; ταῦτα Pl.Grg.495b; ὅτι... ὡς . . Th. 4.23,6.55, Pl.Tht.172b; περί τινος Id.Sph.249c.    2 put firm trust in a thing, rely on it, τῷ ξυνῷ πάντων Heraclit.114; λόγῳ Lys.6.35; διαθήκαις Is.1.3; τῷ νόμῳ Hyp.Eux.4, D.33.27; παρασκευῇ Id.44.3, cf. Isoc.17.24; feel confidence, Antipho 5.76.