ἀμφίβασις
From LSJ
οὕτως ἐξ ἐχθρῶν αὐτοκτόνα πέμπετο δῶρα, ἐν χάριτος προφάσει μοῖραν ἔχοντα μόρου → thus mutual gifts that bring death were bestowed by enemies, gifts that brought the lot of death in the name of a favor
English (LSJ)
εως, ἡ,
A defence of fallen comrade, δεῖσε δ' ὅ γ' ἀμφίβασιν . . Τρώων Il.5.623.