| I | impugn |
| you | impugn |
| he/she/it | impugns |
| we | impugn |
| you | impugn |
| they | impugn |
| I | have impugned |
| you | have impugned |
| he/she/it | has impugned |
| we | have impugned |
| you | have impugned |
| they | have impugned |
| I | impugned |
| you | impugned |
| he/she/it | impugned |
| we | impugned |
| you | impugned |
| they | impugned |
| I | had impugned |
| you | had impugned |
| he/she/it | had impugned |
| we | had impugned |
| you | had impugned |
| they | had impugned |
| I | will impugn |
| you | will impugn |
| he/she/it | will impugn |
| we | will impugn |
| you | will impugn |
| they | will impugn |
| I | will have impugned |
| you | will have impugned |
| he/she/it | will have impugned |
| we | will have impugned |
| you | will have impugned |
| they | will have impugned |
| I | am impugning |
| you | are impugning |
| he/she/it | is impugning |
| we | are impugning |
| you | are impugning |
| they | are impugning |
| I | have been impugning |
| you | have been impugning |
| he/she/it | has been impugning |
| we | have been impugning |
| you | have been impugning |
| they | have been impugning |
| I | was impugning |
| you | were impugning |
| he/she/it | was impugning |
| we | were impugning |
| you | were impugning |
| they | were impugning |
| I | had been impugning |
| you | had been impugning |
| he/she/it | had been impugning |
| we | had been impugning |
| you | had been impugning |
| they | had been impugning |
| I | will be impugning |
| you | will be impugning |
| he/she/it | will be impugning |
| we | will be impugning |
| you | will be impugning |
| they | will be impugning |
| I | will have been impugning |
| you | will have been impugning |
| he/she/it | will have been impugning |
| we | will have been impugning |
| you | will have been impugning |
| they | will have been impugning |
| I | would impugn |
| you | would impugn |
| he/she/it | would impugn |
| we | would impugn |
| you | would impugn |
| they | would impugn |
| I | would have impugned |
| you | would have impugned |
| he/she/it | would have impugned |
| we | would have impugned |
| you | would have impugned |
| they | would have impugned |
| I | would be impugning |
| you | would be impugning |
| he/she/it | would be impugning |
| we | would be impugning |
| you | would be impugning |
| they | would be impugning |
| I | would have been impugning |
| you | would have been impugning |
| he/she/it | would have been impugning |
| we | would have been impugning |
| you | would have been impugning |
| they | would have been impugning |
| You | impugn |
| we | Let's impugn |
| You | impugn |