| Simple | Progressive | Perfect | Progressive |
| Present |
| I smoulder |
| you smoulder |
| he/she/it smoulders |
| we smoulder |
| you all smoulder |
| they smoulder |
|
| I am smouldering |
| you are smouldering |
| he/she/it is smouldering |
| we are smouldering |
| you all are smouldering |
| they are smouldering |
|
| I have smouldered |
| you have smouldered |
| he/she/it has smouldered |
| we have smouldered |
| you all have smouldered |
| they have smouldered |
|
| I have been smouldering |
| you have been smouldering |
| he/she/it has been smouldering |
| we have been smouldering |
| you all have been smouldering |
| they have been smouldering |
|
| Past |
| I smouldered |
| you smouldered |
| he/she/it smouldered |
| we smouldered |
| you all smouldered |
| they smouldered |
|
| I was smouldering |
| you were smouldering |
| he/she/it was smouldering |
| we were smouldering |
| you all were smouldering |
| they were smouldering |
|
| I had smouldered |
| you had smouldered |
| he/she/it had smouldered |
| we had smouldered |
| you all had smouldered |
| they had smouldered |
|
| I had been smouldering |
| you had been smouldering |
| he/she/it had been smouldering |
| we had been smouldering |
| you all had been smouldering |
| they had been smouldering |
|
| Future |
| I will smoulder |
| you will smoulder |
| he/she/it will smoulder |
| we will smoulder |
| you all will smoulder |
| they will smoulder |
|
| I will be smouldering |
| you will be smouldering |
| he/she/it will be smouldering |
| we are smouldering |
| you all will be smouldering |
| they will be smouldering |
|
| I will have smouldered |
| you will have smouldered |
| he/she/it will have smouldered |
| we will have smouldered |
| you all will have smouldered |
| they will have smouldered |
|
| I will have been smouldering |
| you will have been smouldering |
| he/she/it will have been smouldering |
| we will have been smouldering |
| you all will have been smouldering |
| they will have been smouldering |
|
