There are 10 words that start with 'prefab'.
| prefab | prefabs |
| prefabbed | prefabbing |
| prefabricate | prefabricated |
| prefabricates | prefabricating |
| prefabrication | prefabrications |
Note: These 10 words that start with 'prefab' are found from the USA & Canada version of the tournament Scrabble word list.