worn-out: P. ἀπειρηκώς.
old-fashioned: P. and V. ἀρχαῖος, παλαιός, P. ἀρχαιότροπος.
stale: P. ἕωλος.
be effete, v.: P. and V. ἀπειπεῖν.
be relaxed: P. and V. ἀνίεσθαι.