Present participle; Past participle - slithering - slithered Present - slither - slither - slithers - slither - slither - slither Past - slithered - slithered - slithered - slithered - slithered - slithered Future - will slither - will slither - will slither - will slither - will slither - will slither Present conditional - would slither - would slither - would slither - would slither - would slither - would slither Present Perfect - have slithered - have slithered - has slithered - have slithered - have slithered - have slithered Past Perfect - had slithered - had slithered - had slithered - had slithered - had slithered - had slithered Future Perfect - will have slithered - will have slithered - will have slithered - will have slithered - will have slithered - will have slithered Past conditional - would have slithered - would have slithered - would have slithered - would have slithered - would have slithered - would have slithered Imperative - - - slither - - - - - - - -