| Simple | Progressive | Perfect | Progressive |
| Present |
| I heighten |
| you heighten |
| he/she/it heightens |
| we heighten |
| you all heighten |
| they heighten |
|
| I am heightening |
| you are heightening |
| he/she/it is heightening |
| we are heightening |
| you all are heightening |
| they are heightening |
|
| I have heightened |
| you have heightened |
| he/she/it has heightened |
| we have heightened |
| you all have heightened |
| they have heightened |
|
| I have been heightening |
| you have been heightening |
| he/she/it has been heightening |
| we have been heightening |
| you all have been heightening |
| they have been heightening |
|
| Past |
| I heightened |
| you heightened |
| he/she/it heightened |
| we heightened |
| you all heightened |
| they heightened |
|
| I was heightening |
| you were heightening |
| he/she/it was heightening |
| we were heightening |
| you all were heightening |
| they were heightening |
|
| I had heightened |
| you had heightened |
| he/she/it had heightened |
| we had heightened |
| you all had heightened |
| they had heightened |
|
| I had been heightening |
| you had been heightening |
| he/she/it had been heightening |
| we had been heightening |
| you all had been heightening |
| they had been heightening |
|
| Future |
| I will heighten |
| you will heighten |
| he/she/it will heighten |
| we will heighten |
| you all will heighten |
| they will heighten |
|
| I will be heightening |
| you will be heightening |
| he/she/it will be heightening |
| we are heightening |
| you all will be heightening |
| they will be heightening |
|
| I will have heightened |
| you will have heightened |
| he/she/it will have heightened |
| we will have heightened |
| you all will have heightened |
| they will have heightened |
|
| I will have been heightening |
| you will have been heightening |
| he/she/it will have been heightening |
| we will have been heightening |
| you all will have been heightening |
| they will have been heightening |
|
