ἔργοισι χρηστός, οὐ λόγοις ἔφυν μόνον → a friend in deeds, and not in words alone
Ar. and P. δυσκολία, ἡ.
of looks: V. στύγος, τό, or use P. and V. τὸ σκυθρωπόν; see also frown.