ἔργοισι χρηστός, οὐ λόγοις ἔφυν μόνον → a friend in deeds, and not in words alone
P. and V. ἐφήμερος.
short-lived: P. βραχύβιος (Plato).
lasting short time: P. ὀλιγοχρόνιος (Plato).
short: P. and V. βραχύς.
soon passing: P. and V. πτηνός (Plato).