| Simple | Progressive | Perfect | Progressive |
| Present |
| I diminish |
| you diminish |
| he/she/it diminishes |
| we diminish |
| you all diminish |
| they diminish |
|
| I am diminishing |
| you are diminishing |
| he/she/it is diminishing |
| we are diminishing |
| you all are diminishing |
| they are diminishing |
|
| I have diminished |
| you have diminished |
| he/she/it has diminished |
| we have diminished |
| you all have diminished |
| they have diminished |
|
| I have been diminishing |
| you have been diminishing |
| he/she/it has been diminishing |
| we have been diminishing |
| you all have been diminishing |
| they have been diminishing |
|
| Past |
| I diminished |
| you diminished |
| he/she/it diminished |
| we diminished |
| you all diminished |
| they diminished |
|
| I was diminishing |
| you were diminishing |
| he/she/it was diminishing |
| we were diminishing |
| you all were diminishing |
| they were diminishing |
|
| I had diminished |
| you had diminished |
| he/she/it had diminished |
| we had diminished |
| you all had diminished |
| they had diminished |
|
| I had been diminishing |
| you had been diminishing |
| he/she/it had been diminishing |
| we had been diminishing |
| you all had been diminishing |
| they had been diminishing |
|
| Future |
| I will diminish |
| you will diminish |
| he/she/it will diminish |
| we will diminish |
| you all will diminish |
| they will diminish |
|
| I will be diminishing |
| you will be diminishing |
| he/she/it will be diminishing |
| we are diminishing |
| you all will be diminishing |
| they will be diminishing |
|
| I will have diminished |
| you will have diminished |
| he/she/it will have diminished |
| we will have diminished |
| you all will have diminished |
| they will have diminished |
|
| I will have been diminishing |
| you will have been diminishing |
| he/she/it will have been diminishing |
| we will have been diminishing |
| you all will have been diminishing |
| they will have been diminishing |
|
