A.strike one thing against another, “πρὸς λίθον τὸν πόδα” LXX Ps.90(91).12; “π. τὸν δάκτυλόν που” Ar.V.275 (lyr).
b. intr., stumble or strike against, τινι X.Eq.7.6, Alex.81, Arist.Pr.882b18, GC 326a27, etc.; π. τῷ ὀφθαλμῷ (sc. ῥίζῃ κυάμου) Thphr.HP4.8.8; of liquid, to be checked by striking against, c. dat., Plu.Lyc.9; πνεῦμα προσκόπτον broken, interrupted breathing, Hp.Aph.4.68.
II. metaph., = προσκρούω 111, offend, Posidipp.36; “τοῖς πολλοῖς” Plb.5.49.5; οὐ μόνον δυσαρεστήσειν ἀλλὰ καὶ προσκόπτειν ἔμελλε προφανῶς, of an open breach, Id.7.5.6.
2. take offence at, “ἵνα μή μοι προσκόψῃς” PCair.Zen.463.11 (iii B.C.); “τῇ βαρύτητί τινος” Plb.1.31.7, cf. Carneisc.Herc. 1027.14; “θεοὺς -κόψαντάς τισι” D.S.13.59; of things, π. τῷ ζῆν to be disgusted with life, Id.4.61:—Pass., δῆμος π. αὐτῷ διά τι being offended with him, App.BC2.27, cf. Phld.Piet.30, M.Ant.9.3.