overpowder adjective 1verb 1forms 3 adjective1 •Serving to hold in the gunpowder.[…] to allow for the extra space taken up by the special overpowder wad. — 1908 verb1 •To use too much powder on.Writing in his quaint way of the salt of the word, he says, "Indeed, a man may overpowder, and there is discretion in salting." — 1868 formsoverpowdered · overpowdering · overpowders