ἐξ ὀνύχων λέοντα τεκμαίρεσθαι → judge by the claws, judge by a slight but characteristic mark, small traits give the clue to the character of a person, deduce something from a small indication, identify a lion from its claws
lautlos, sine voce (z.B. gemitum edere). – nullā voce (z.B. zu Boden sinken, delabi).