unprofitable
From LSJ
Οἱ βασιλεῖς τῇ ἐγκυκλοπαιδείᾳ, αὐτὴ τοῖς βασιλεῦσι (Salamanca inscription) → The kings for the university, and the university for the kings
Οἱ βασιλεῖς τῇ ἐγκυκλοπαιδείᾳ, αὐτὴ τοῖς βασιλεῦσι (Salamanca inscription) → The kings for the university, and the university for the kings
P. ἀλυσιτελής, ἄκαρπος, P. and V. ἀνόνητος, ἀνωφελής, ἄχρηστος, ἀχρεῖος, ἀσύμφορος, V. ἀνωφέλητος (also Xen.), ἀκάρπωτος.
vain: P. and V. κενός, μάταιος, P. ἄπρακτος.