προσκυνεῖν
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.
Greek > English (Woodhouse Verbs Reversed)
(see also προσκυνέω): adore, worship, do obeisance to, do obeisance, fall at a person's knees, fall on one's knees, kneel to, make obeisance to, make obeisance, prostrate oneself before, prostrate oneself