Present participle; Past participle - refuting - refuted Present - refute - refute - refutes - refute - refute - refute Past - refuted - refuted - refuted - refuted - refuted - refuted Future - will refute - will refute - will refute - will refute - will refute - will refute Present conditional - would refute - would refute - would refute - would refute - would refute - would refute Present Perfect - have refuted - have refuted - has refuted - have refuted - have refuted - have refuted Past Perfect - had refuted - had refuted - had refuted - had refuted - had refuted - had refuted Future Perfect - will have refuted - will have refuted - will have refuted - will have refuted - will have refuted - will have refuted Past conditional - would have refuted - would have refuted - would have refuted - would have refuted - would have refuted - would have refuted Imperative - - - refute - - - - - - - -