| Simple | Progressive | Perfect | Progressive |
| Present |
| I attenuate |
| you attenuate |
| he/she/it attenuates |
| we attenuate |
| you all attenuate |
| they attenuate |
|
| I am attenuating |
| you are attenuating |
| he/she/it is attenuating |
| we are attenuating |
| you all are attenuating |
| they are attenuating |
|
| I have attenuated |
| you have attenuated |
| he/she/it has attenuated |
| we have attenuated |
| you all have attenuated |
| they have attenuated |
|
| I have been attenuating |
| you have been attenuating |
| he/she/it has been attenuating |
| we have been attenuating |
| you all have been attenuating |
| they have been attenuating |
|
| Past |
| I attenuated |
| you attenuated |
| he/she/it attenuated |
| we attenuated |
| you all attenuated |
| they attenuated |
|
| I was attenuating |
| you were attenuating |
| he/she/it was attenuating |
| we were attenuating |
| you all were attenuating |
| they were attenuating |
|
| I had attenuated |
| you had attenuated |
| he/she/it had attenuated |
| we had attenuated |
| you all had attenuated |
| they had attenuated |
|
| I had been attenuating |
| you had been attenuating |
| he/she/it had been attenuating |
| we had been attenuating |
| you all had been attenuating |
| they had been attenuating |
|
| Future |
| I will attenuate |
| you will attenuate |
| he/she/it will attenuate |
| we will attenuate |
| you all will attenuate |
| they will attenuate |
|
| I will be attenuating |
| you will be attenuating |
| he/she/it will be attenuating |
| we are attenuating |
| you all will be attenuating |
| they will be attenuating |
|
| I will have attenuated |
| you will have attenuated |
| he/she/it will have attenuated |
| we will have attenuated |
| you all will have attenuated |
| they will have attenuated |
|
| I will have been attenuating |
| you will have been attenuating |
| he/she/it will have been attenuating |
| we will have been attenuating |
| you all will have been attenuating |
| they will have been attenuating |
|
