Present participle; Past participle - smothering - smothered Present - smother - smother - smothers - smother - smother - smother Past - smothered - smothered - smothered - smothered - smothered - smothered Future - will smother - will smother - will smother - will smother - will smother - will smother Present conditional - would smother - would smother - would smother - would smother - would smother - would smother Present Perfect - have smothered - have smothered - has smothered - have smothered - have smothered - have smothered Past Perfect - had smothered - had smothered - had smothered - had smothered - had smothered - had smothered Future Perfect - will have smothered - will have smothered - will have smothered - will have smothered - will have smothered - will have smothered Past conditional - would have smothered - would have smothered - would have smothered - would have smothered - would have smothered - would have smothered Imperative - - - smother - - - - - - - -