κενότης
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
English (LSJ)
ητος, ἡ,
A emptiness, Pl.R.585b, Ti.58b, Thphr.Sens.54; vanity, Phld.D.1.17; εἰς κενότητας ἄν μοι ὁ λόγος ἐξέπιπτε D.H.Is.20; κ. σφυγμοῦ Agathin. ap. Gal.8.936; cf. κενεότης.