by blood
From LSJ
ἐν ταῖς ἀνάγκαις χρημάτων κρείττων φίλος → it is better in times of need to have friends rather than money, a friend in need is a friend indeed (Menander, Sententiae monostichoi 143)
English > Greek (Woodhouse Extra)
τὸ συγγενές, συγγένεια, ἀναγκαῖος, οἰκεῖος
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