ἀκοίτης
From LSJ
ο φίλος τον φίλον εν πόνοις και κινδύνοις ου λείπει → a friend does not abandon his friend in difficulties and in danger, a friend in need is a friend indeed
English (LSJ)
ου, ὁ, (ἀ- copul., κοίτη, cf. Pl.Cra.405d)
A bedfellow, husband, Il.15.91, Od.5.120, Pi.N.5.28, S.Tr.525, E.El.166 (lyr.):— fem. ἄκοιτις, ιος, ἡ, wife, Il.3.138, B.5.169, A.Pers.684, etc.—Poet. words.
