Present
| I | heighten |
| You | heighten |
| She | heightens |
| We | heighten |
| They | heighten |
Past
| I | heightened |
| You | heightened |
| She | heightened |
| We | heightened |
| They | heightened |
Perfect
| I | have | heightened |
| You | have | heightened |
| She | has | heightened |
| We | have | heightened |
| They | have | heightened |
Future
| I | will | heighten |
| You | will | heighten |
| She | will | heighten |
| We | will | heighten |
| They | will | heighten |
Past Perfect
| I | had | heightened |
| You | had | heightened |
| She | had | heightened |
| We | had | heightened |
| They | had | heightened |
Future Perfect
| I | will | have | heightened |
| You | will | have | heightened |
| She | will | have | heightened |
| We | will | have | heightened |
| They | will | have | heightened |
Present - Conditional
| I | would | heighten |
| You | would | heighten |
| She | would | heighten |
| We | would | heighten |
| They | would | heighten |
Perfect - Conditional
| I | would | have | heightened |
| You | would | have | heightened |
| She | would | have | heightened |
| We | would | have | heightened |
| They | would | have | heightened |