Present participle; Past participle - impoverishing - impoverished Present - impoverish - impoverish - impoverishes - impoverish - impoverish - impoverish Past - impoverished - impoverished - impoverished - impoverished - impoverished - impoverished Future - will impoverish - will impoverish - will impoverish - will impoverish - will impoverish - will impoverish Present conditional - would impoverish - would impoverish - would impoverish - would impoverish - would impoverish - would impoverish Present Perfect - have impoverished - have impoverished - has impoverished - have impoverished - have impoverished - have impoverished Past Perfect - had impoverished - had impoverished - had impoverished - had impoverished - had impoverished - had impoverished Future Perfect - will have impoverished - will have impoverished - will have impoverished - will have impoverished - will have impoverished - will have impoverished Past conditional - would have impoverished - would have impoverished - would have impoverished - would have impoverished - would have impoverished - would have impoverished Imperative - - - impoverish - - - - - - - -