disputant /dɪˈspjuːtənt/adjective 1noun 1forms 3 adjective1 •Disputing; engaged in controversy.[...] [T]here was found / Among the gravest Rabbies disputant / On points and questions fitting Moses Chair, / Teaching not taught; [...] — 1671 noun1 •A participant in a dispute. formsdisputants · more disputant · most disputant