πολεμοῦσθαι
From LSJ
Φίλος με βλάπτων (λυπῶν) οὐδὲν ἐχθροῦ διαφέρει → Laedens amicus distat inimico nihil → Ein Freund, der schadet, ist ganz gelich mir einem Feind
Greek > English (Woodhouse Verbs Reversed)
(see also πολεμόω): make hostile
Lexicon Thucydideum
ad bellum compellere, to compel to war, 5.98.1,
PASS. 1.36.1,
hostilis redditur, is rendered hostile. 1.57.2,
hostis factus crat, had become an enemy. 1.57.3.