Present
| I | decelerate |
| You | decelerate |
| She | decelerates |
| We | decelerate |
| They | decelerate |
Past
| I | decelerated |
| You | decelerated |
| She | decelerated |
| We | decelerated |
| They | decelerated |
Perfect
| I | have | decelerated |
| You | have | decelerated |
| She | has | decelerated |
| We | have | decelerated |
| They | have | decelerated |
Future
| I | will | decelerate |
| You | will | decelerate |
| She | will | decelerate |
| We | will | decelerate |
| They | will | decelerate |
Past Perfect
| I | had | decelerated |
| You | had | decelerated |
| She | had | decelerated |
| We | had | decelerated |
| They | had | decelerated |
Future Perfect
| I | will | have | decelerated |
| You | will | have | decelerated |
| She | will | have | decelerated |
| We | will | have | decelerated |
| They | will | have | decelerated |
Present - Conditional
| I | would | decelerate |
| You | would | decelerate |
| She | would | decelerate |
| We | would | decelerate |
| They | would | decelerate |
Perfect - Conditional
| I | would | have | decelerated |
| You | would | have | decelerated |
| She | would | have | decelerated |
| We | would | have | decelerated |
| They | would | have | decelerated |