Present participle; Past participle - floundering - floundered Present - flounder - flounder - flounders - flounder - flounder - flounder Past - floundered - floundered - floundered - floundered - floundered - floundered Future - will flounder - will flounder - will flounder - will flounder - will flounder - will flounder Present conditional - would flounder - would flounder - would flounder - would flounder - would flounder - would flounder Present Perfect - have floundered - have floundered - has floundered - have floundered - have floundered - have floundered Past Perfect - had floundered - had floundered - had floundered - had floundered - had floundered - had floundered Future Perfect - will have floundered - will have floundered - will have floundered - will have floundered - will have floundered - will have floundered Past conditional - would have floundered - would have floundered - would have floundered - would have floundered - would have floundered - would have floundered Imperative - - - flounder - - - - - - - -