indef noun 1verb 1adjective 1forms 3 noun1 •(Internet) The action of blocking or banning a user, account, or IP address from editing or other actions for an indefinite length of time.An indef seems the only way to stem the flow of disruption from this user. verb1 •(Internet) To block or ban a user, account, or IP address from editing or other actions for an indefinite length of time.I indeffed the editor based on the legal threat. adjective1 •Abbreviation of indefinite. formsindeffed · indeffing · indefs