in one's sleep
From LSJ
δι' ἐρημίας πολεμίων πορευόμενος → he marched on without finding any enemy, his route lay through a country bare of enemies
English > Greek (Woodhouse Extra)
καθ' ὕπνον, ἐν ὕπνῳ, κατ' ὄναρ, ὄναρ
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