Present participle; Past participle - imperil(l)ing - imperil(l)ed Present - imperil - imperil - imperils - imperil - imperil - imperil Past - imperil(l)ed - imperil(l)ed - imperil(l)ed - imperil(l)ed - imperil(l)ed - imperil(l)ed Future - will imperil - will imperil - will imperil - will imperil - will imperil - will imperil Present conditional - would imperil - would imperil - would imperil - would imperil - would imperil - would imperil Present Perfect - have imperil(l)ed - have imperil(l)ed - has imperil(l)ed - have imperil(l)ed - have imperil(l)ed - have imperil(l)ed Past Perfect - had imperil(l)ed - had imperil(l)ed - had imperil(l)ed - had imperil(l)ed - had imperil(l)ed - had imperil(l)ed Future Perfect - will have imperil(l)ed - will have imperil(l)ed - will have imperil(l)ed - will have imperil(l)ed - will have imperil(l)ed - will have imperil(l)ed Past conditional - would have imperil(l)ed - would have imperil(l)ed - would have imperil(l)ed - would have imperil(l)ed - would have imperil(l)ed - would have imperil(l)ed Imperative - - - imperil - - - - - - - -