There are 11 words that start with 'apocal'.
| apocalypse | apocalypses |
| apocalyptic | apocalyptism |
| apocalyptist | apocalyptical |
| apocalyptisms | apocalyptists |
| apocalypticism | apocalyptically |
| apocalypticisms | |
Note: These 11 words that start with 'apocal' are found from the USA & Canada version of the tournament Scrabble word list.