Present participle; Past participle - flattering - flattered Present - flatter - flatter - flatters - flatter - flatter - flatter Past - flattered - flattered - flattered - flattered - flattered - flattered Future - will flatter - will flatter - will flatter - will flatter - will flatter - will flatter Present conditional - would flatter - would flatter - would flatter - would flatter - would flatter - would flatter Present Perfect - have flattered - have flattered - has flattered - have flattered - have flattered - have flattered Past Perfect - had flattered - had flattered - had flattered - had flattered - had flattered - had flattered Future Perfect - will have flattered - will have flattered - will have flattered - will have flattered - will have flattered - will have flattered Past conditional - would have flattered - would have flattered - would have flattered - would have flattered - would have flattered - would have flattered Imperative - - - flatter - - - - - - - -