comˈpromissary,a. ? Obs. [ad. L. comprōmissāri-us pertaining to arbitration, f.comprōmissum compromise: see -ary1. Cf. F. compromissairen.] Of or pertaining to compromise. 1795Wythe Decis. Virginia 109 The object of these compromissary disceptations is to prevent expense, delay, etc.