There are 15 words that start with 'prela'.
| prelaw | prelacy | prelate |
| prelates | prelatic | prelacies |
| prelatism | prelature | prelaunch |
| prelatisms | prelatures | prelaunched |
| prelaunches | prelapsarian | prelaunching |
Note: These 15 words that start with 'prela' are found from the USA & Canada version of the tournament Scrabble word list.