| I | slacken off |
| you | slacken off |
| he/she/it | slackens off |
| we | slacken off |
| you | slacken off |
| they | slacken off |
| I | have slackened off |
| you | have slackened off |
| he/she/it | has slackened off |
| we | have slackened off |
| you | have slackened off |
| they | have slackened off |
| I | slackened off |
| you | slackened off |
| he/she/it | slackened off |
| we | slackened off |
| you | slackened off |
| they | slackened off |
| I | had slackened off |
| you | had slackened off |
| he/she/it | had slackened off |
| we | had slackened off |
| you | had slackened off |
| they | had slackened off |
| I | will slacken off |
| you | will slacken off |
| he/she/it | will slacken off |
| we | will slacken off |
| you | will slacken off |
| they | will slacken off |
| I | will have slackened off |
| you | will have slackened off |
| he/she/it | will have slackened off |
| we | will have slackened off |
| you | will have slackened off |
| they | will have slackened off |
| I | am slackening off |
| you | are slackening off |
| he/she/it | is slackening off |
| we | are slackening off |
| you | are slackening off |
| they | are slackening off |
| I | have been slackening off |
| you | have been slackening off |
| he/she/it | has been slackening off |
| we | have been slackening off |
| you | have been slackening off |
| they | have been slackening off |
| I | was slackening off |
| you | were slackening off |
| he/she/it | was slackening off |
| we | were slackening off |
| you | were slackening off |
| they | were slackening off |
| I | had been slackening off |
| you | had been slackening off |
| he/she/it | had been slackening off |
| we | had been slackening off |
| you | had been slackening off |
| they | had been slackening off |
| I | will be slackening off |
| you | will be slackening off |
| he/she/it | will be slackening off |
| we | will be slackening off |
| you | will be slackening off |
| they | will be slackening off |
| I | will have been slackening off |
| you | will have been slackening off |
| he/she/it | will have been slackening off |
| we | will have been slackening off |
| you | will have been slackening off |
| they | will have been slackening off |
| I | would slacken off |
| you | would slacken off |
| he/she/it | would slacken off |
| we | would slacken off |
| you | would slacken off |
| they | would slacken off |
| I | would have slackened off |
| you | would have slackened off |
| he/she/it | would have slackened off |
| we | would have slackened off |
| you | would have slackened off |
| they | would have slackened off |
| I | would be slackening off |
| you | would be slackening off |
| he/she/it | would be slackening off |
| we | would be slackening off |
| you | would be slackening off |
| they | would be slackening off |
| I | would have been slackening off |
| you | would have been slackening off |
| he/she/it | would have been slackening off |
| we | would have been slackening off |
| you | would have been slackening off |
| they | would have been slackening off |
| You | slacken off |
| we | Let's slacken off |
| You | slacken off |