misbuy noun 1verb 1forms 3 noun1 •An erroneous buy; a purchase made in error or by mistake; a purchase made without proper understanding, research, or consideration, often leading to regret.Forget the misbuys after you have profited by them and lay stress upon the new. — 1930 verb1 •To buy in error or regretfully.We are giving special attention to the wants of Canadian misbuying Manitoba wheat and other grains. — 1918 formsmisbought · misbuying · misbuys