Present participle; Past participle - nullifying - nullified Present - nullify - nullify - nullifies - nullify - nullify - nullify Past - nullified - nullified - nullified - nullified - nullified - nullified Future - will nullify - will nullify - will nullify - will nullify - will nullify - will nullify Present conditional - would nullify - would nullify - would nullify - would nullify - would nullify - would nullify Present Perfect - have nullified - have nullified - has nullified - have nullified - have nullified - have nullified Past Perfect - had nullified - had nullified - had nullified - had nullified - had nullified - had nullified Future Perfect - will have nullified - will have nullified - will have nullified - will have nullified - will have nullified - will have nullified Past conditional - would have nullified - would have nullified - would have nullified - would have nullified - would have nullified - would have nullified Imperative - - - nullify - - - - - - - -