| I | weaken |
| you | weaken |
| he/she/it | weakens |
| we | weaken |
| you | weaken |
| they | weaken |
| I | have weakened |
| you | have weakened |
| he/she/it | has weakened |
| we | have weakened |
| you | have weakened |
| they | have weakened |
| I | weakened |
| you | weakened |
| he/she/it | weakened |
| we | weakened |
| you | weakened |
| they | weakened |
| I | had weakened |
| you | had weakened |
| he/she/it | had weakened |
| we | had weakened |
| you | had weakened |
| they | had weakened |
| I | will weaken |
| you | will weaken |
| he/she/it | will weaken |
| we | will weaken |
| you | will weaken |
| they | will weaken |
| I | will have weakened |
| you | will have weakened |
| he/she/it | will have weakened |
| we | will have weakened |
| you | will have weakened |
| they | will have weakened |
| I | am weakening |
| you | are weakening |
| he/she/it | is weakening |
| we | are weakening |
| you | are weakening |
| they | are weakening |
| I | have been weakening |
| you | have been weakening |
| he/she/it | has been weakening |
| we | have been weakening |
| you | have been weakening |
| they | have been weakening |
| I | was weakening |
| you | were weakening |
| he/she/it | was weakening |
| we | were weakening |
| you | were weakening |
| they | were weakening |
| I | had been weakening |
| you | had been weakening |
| he/she/it | had been weakening |
| we | had been weakening |
| you | had been weakening |
| they | had been weakening |
| I | will be weakening |
| you | will be weakening |
| he/she/it | will be weakening |
| we | will be weakening |
| you | will be weakening |
| they | will be weakening |
| I | will have been weakening |
| you | will have been weakening |
| he/she/it | will have been weakening |
| we | will have been weakening |
| you | will have been weakening |
| they | will have been weakening |
| I | would weaken |
| you | would weaken |
| he/she/it | would weaken |
| we | would weaken |
| you | would weaken |
| they | would weaken |
| I | would have weakened |
| you | would have weakened |
| he/she/it | would have weakened |
| we | would have weakened |
| you | would have weakened |
| they | would have weakened |
| I | would be weakening |
| you | would be weakening |
| he/she/it | would be weakening |
| we | would be weakening |
| you | would be weakening |
| they | would be weakening |
| I | would have been weakening |
| you | would have been weakening |
| he/she/it | would have been weakening |
| we | would have been weakening |
| you | would have been weakening |
| they | would have been weakening |
| You | weaken |
| we | Let's weaken |
| You | weaken |