Dictionary entry

διαμάχομαι

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

δια-μάχομαι

[in LXX for לחם ni., Da LXX 10:20; Si 8:1, 3 38:28 51:19 *;]

1. to struggle against.

2. In argument, to contend: Ac 23:9.†