πηλίκος
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)
[ῐ], η, ον, interrog. correl. to τηλίκος, ἡλίκος,
A how great or large? πηλίκη τις ἔσται ἡ γραμμή; Pl.Men.82d, cf. 83e; πηλίκον τινὰ οἴεσθε μέγεθος; Eub.82 ; after τηλικοῦτος, D.19.284; πόσα καὶ πηλίκα of what number and magnitude, Plb.1.2.8 : with Art., ὁ πηλίκος; quantulus? Babr.69.4; τὸ π. magnitude, opp. τὸ ποσόν (quantity), Nicom. Ar.1.2 ; ὁ χρόνος . . ἐστὶ μῖγμα πηλίκου καὶ ποσοῦ Dam.Pr.371. Adv. -κως Hdn.Gr.2.925. II of what age, π. ἦσθ' ὅθ' ὁ Μῆδος ἀφίκετο; Xenoph.22.5. 2 indef., of a certain age, Arist.EN1134b11 : Comp. -ώτερος, f.l. for ἀπηλικέστερος, Aret.SA2.11.