downvote UK /ˈdaʊnˌvəʊt/US /ˈdaʊnˌvoʊt/noun 1verb 1forms 3 noun1 •(Internet) A vote against something that reduces a cumulative tally of popularity. verb1 •(Internet) To vote against, reducing a cumulative tally of popularity. formsdownvoted · downvoting · downvotes