ὑπὲρ κεφαλῆς γῆρας ὑπερκρέμαται → old age hangs over one's head
αἴφνης, ἐξαίφνης, ἄφνω, ἐξαπίνης, αἰφνιδίως, ἀθρόως, ἐξαιφνιδίως