| Simple | Progressive | Perfect | Progressive |
| Present |
| I appall |
| you appall |
| he/she/it appalls |
| we appall |
| you all appall |
| they appall |
|
| I am appalling |
| you are appalling |
| he/she/it is appalling |
| we are appalling |
| you all are appalling |
| they are appalling |
|
| I have appalled |
| you have appalled |
| he/she/it has appalled |
| we have appalled |
| you all have appalled |
| they have appalled |
|
| I have been appalling |
| you have been appalling |
| he/she/it has been appalling |
| we have been appalling |
| you all have been appalling |
| they have been appalling |
|
| Past |
| I appalled |
| you appalled |
| he/she/it appalled |
| we appalled |
| you all appalled |
| they appalled |
|
| I was appalling |
| you were appalling |
| he/she/it was appalling |
| we were appalling |
| you all were appalling |
| they were appalling |
|
| I had appalled |
| you had appalled |
| he/she/it had appalled |
| we had appalled |
| you all had appalled |
| they had appalled |
|
| I had been appalling |
| you had been appalling |
| he/she/it had been appalling |
| we had been appalling |
| you all had been appalling |
| they had been appalling |
|
| Future |
| I will appall |
| you will appall |
| he/she/it will appall |
| we will appall |
| you all will appall |
| they will appall |
|
| I will be appalling |
| you will be appalling |
| he/she/it will be appalling |
| we are appalling |
| you all will be appalling |
| they will be appalling |
|
| I will have appalled |
| you will have appalled |
| he/she/it will have appalled |
| we will have appalled |
| you all will have appalled |
| they will have appalled |
|
| I will have been appalling |
| you will have been appalling |
| he/she/it will have been appalling |
| we will have been appalling |
| you all will have been appalling |
| they will have been appalling |
|
