Present participle; Past participle - slumbering - slumbered Present - slumber - slumber - slumbers - slumber - slumber - slumber Past - slumbered - slumbered - slumbered - slumbered - slumbered - slumbered Future - will slumber - will slumber - will slumber - will slumber - will slumber - will slumber Present conditional - would slumber - would slumber - would slumber - would slumber - would slumber - would slumber Present Perfect - have slumbered - have slumbered - has slumbered - have slumbered - have slumbered - have slumbered Past Perfect - had slumbered - had slumbered - had slumbered - had slumbered - had slumbered - had slumbered Future Perfect - will have slumbered - will have slumbered - will have slumbered - will have slumbered - will have slumbered - will have slumbered Past conditional - would have slumbered - would have slumbered - would have slumbered - would have slumbered - would have slumbered - would have slumbered Imperative - - - slumber - - - - - - - -