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
adj.
Praiseworthy: P. ἐπαινετός.
Good: P. and V. σπουδαῖος, καλός, χρηστός.
Befitting: P. and V. εὐπρεπής.
Glorious: P. and V. εὔδοξος.