ἀντεπάγω
From LSJ
ἀκμὴ οὐδὲ ἔχει γενέσεως ὑπόστασιν καθ' ἑαυτήν → the culmination has no power of originating by itself
English (LSJ)
[ᾰγ],
A lead against: abs. (sc. στρατόν or the like ), advance against, advance to meet an enemy, Th.4.124, Plb.12.18.11, etc. II inflict in return, ποινήν τινι Aristaenet.2.9. III introduce as a counter-measure, ἀλεξήματα Onos.30. ἀντεπακτέον,
A one must march against, πρός τινα Id.21.6.