ἀντιποιεῖσθαι
From LSJ
εἰργάζοντο λογάδην φέροντες λίθους καὶ ξυνετίθεσαν ὡς ἕκαστόν τι ξυμβαίνοι → they went to work bringing the stones as they picked them out and put them together as each one happened to fit
Greek > English (Woodhouse Verbs Reversed)
(see also ἀντιποιέω): claim, arrogate to oneself, assert a claim to, claim as one's own, claim for oneself, pretend to