Present
| I | appal |
| You | appal |
| She | appals |
| We | appal |
| They | appal |
Past
| I | appalled |
| You | appalled |
| She | appalled |
| We | appalled |
| They | appalled |
Perfect
| I | have | appalled |
| You | have | appalled |
| She | has | appalled |
| We | have | appalled |
| They | have | appalled |
Future
| I | will | appal |
| You | will | appal |
| She | will | appal |
| We | will | appal |
| They | will | appal |
Past Perfect
| I | had | appalled |
| You | had | appalled |
| She | had | appalled |
| We | had | appalled |
| They | had | appalled |
Future Perfect
| I | will | have | appalled |
| You | will | have | appalled |
| She | will | have | appalled |
| We | will | have | appalled |
| They | will | have | appalled |
Present - Conditional
| I | would | appal |
| You | would | appal |
| She | would | appal |
| We | would | appal |
| They | would | appal |
Perfect - Conditional
| I | would | have | appalled |
| You | would | have | appalled |
| She | would | have | appalled |
| We | would | have | appalled |
| They | would | have | appalled |