indubitate /ɪnˈd(j)uːbɪtət/adjective 1/ɪnˈd(j)uːbɪteɪt/ verb 1forms 5 adjective1 •Not questioned or doubtful; evident; certain. indubitate /ɪnˈd(j)uːbɪteɪt/ verb1 •(no longer used) To bring into doubt; to cause to be doubted. formsindubitated · indubitating · indubitates · more indubitate · most indubitate