| I | lessen |
| you | lessen |
| he/she/it | lessens |
| we | lessen |
| you | lessen |
| they | lessen |
| I | have lessened |
| you | have lessened |
| he/she/it | has lessened |
| we | have lessened |
| you | have lessened |
| they | have lessened |
| I | lessened |
| you | lessened |
| he/she/it | lessened |
| we | lessened |
| you | lessened |
| they | lessened |
| I | had lessened |
| you | had lessened |
| he/she/it | had lessened |
| we | had lessened |
| you | had lessened |
| they | had lessened |
| I | will lessen |
| you | will lessen |
| he/she/it | will lessen |
| we | will lessen |
| you | will lessen |
| they | will lessen |
| I | will have lessened |
| you | will have lessened |
| he/she/it | will have lessened |
| we | will have lessened |
| you | will have lessened |
| they | will have lessened |
| I | am lessening |
| you | are lessening |
| he/she/it | is lessening |
| we | are lessening |
| you | are lessening |
| they | are lessening |
| I | have been lessening |
| you | have been lessening |
| he/she/it | has been lessening |
| we | have been lessening |
| you | have been lessening |
| they | have been lessening |
| I | was lessening |
| you | were lessening |
| he/she/it | was lessening |
| we | were lessening |
| you | were lessening |
| they | were lessening |
| I | had been lessening |
| you | had been lessening |
| he/she/it | had been lessening |
| we | had been lessening |
| you | had been lessening |
| they | had been lessening |
| I | will be lessening |
| you | will be lessening |
| he/she/it | will be lessening |
| we | will be lessening |
| you | will be lessening |
| they | will be lessening |
| I | will have been lessening |
| you | will have been lessening |
| he/she/it | will have been lessening |
| we | will have been lessening |
| you | will have been lessening |
| they | will have been lessening |
| I | would lessen |
| you | would lessen |
| he/she/it | would lessen |
| we | would lessen |
| you | would lessen |
| they | would lessen |
| I | would have lessened |
| you | would have lessened |
| he/she/it | would have lessened |
| we | would have lessened |
| you | would have lessened |
| they | would have lessened |
| I | would be lessening |
| you | would be lessening |
| he/she/it | would be lessening |
| we | would be lessening |
| you | would be lessening |
| they | would be lessening |
| I | would have been lessening |
| you | would have been lessening |
| he/she/it | would have been lessening |
| we | would have been lessening |
| you | would have been lessening |
| they | would have been lessening |
| You | lessen |
| we | Let's lessen |
| You | lessen |