ὥσπερ ἀνέµου 'ξαίφνης ἀσελγοῦς γενοµένου → just as when a wind suddenly turns foul, just as when a wind suddenly turns nasty
P. and V. λάθρα, λαθραίως (rare P.), P. κρύφα, Ar. and P. κρύβδην, V. κρυφῆ; (also Xen.), κρυφαίως, κρύβδα.