συνεισφέρειν
From LSJ
ἴσον ἔχουσαν πατρὶ μένος καὶ ἐπίφρονα βουλήν (Hesiod, Theogony 896) → equal to her father in strength and in wise understanding (on Athena necklace)
Greek > English (Woodhouse Verbs Reversed)
(see also συνεισφέρω): join in paying a property-tax, join in paying property tax