take up with

take up with, to: adjungo, nxi, ctum, 3 (with pron. reflect.): there was no reason for you to t. up with him as a companion, quod socium tibi eum velles a. nihil erat, Cic. Quint. 3, 12: I t. up with their cause, ad eorum causam me a., id. Fam. 1, 9, 11: youths t. up with some pursuit, adolescentuli animum ad aliquod studium adjungunt, Ter. Andr. 1, 1, 29: v. ADOPT.