Present
| I | smoulder |
| You | smoulder |
| She | smoulders |
| We | smoulder |
| They | smoulder |
Past
| I | smouldered |
| You | smouldered |
| She | smouldered |
| We | smouldered |
| They | smouldered |
Perfect
| I | have | smouldered |
| You | have | smouldered |
| She | has | smouldered |
| We | have | smouldered |
| They | have | smouldered |
Future
| I | will | smoulder |
| You | will | smoulder |
| She | will | smoulder |
| We | will | smoulder |
| They | will | smoulder |
Past Perfect
| I | had | smouldered |
| You | had | smouldered |
| She | had | smouldered |
| We | had | smouldered |
| They | had | smouldered |
Future Perfect
| I | will | have | smouldered |
| You | will | have | smouldered |
| She | will | have | smouldered |
| We | will | have | smouldered |
| They | will | have | smouldered |
Present - Conditional
| I | would | smoulder |
| You | would | smoulder |
| She | would | smoulder |
| We | would | smoulder |
| They | would | smoulder |
Perfect - Conditional
| I | would | have | smouldered |
| You | would | have | smouldered |
| She | would | have | smouldered |
| We | would | have | smouldered |
| They | would | have | smouldered |