εὐκινησία
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)
ἡ,
A ease of motion, mobility, Antyll. ap. Stob.4.37.16; μελῶν Herod.Med. ap. Orib.5.27.20; τροχιλιῶν Orib.49.4.34; πυρός Simp.in Cael.662.20; βάσεως Artemo 12; mobility of troops, Plb.8.26.3, D.S.3.49 (pl.): generally, Dam.Pr.287. 2 mobility of mind, τῆς ψυχῆς αἱ εὐ. Epicur.Ep.1p.20U., cf. Phld.Ir.p.72 W., Ath.Mech. 32.1.