συνυποτίθεμαι

A. assume also, in arguing, Pl. Ax. 370a.
II. help in devising, ς. τινὶ λόγον Plu. Cat.Mi. 66.
III. suggest or advise as well, Gal. 8.118.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project