There are 12 words that end with 'former'.
| former | deformer | 
| informer | reformer | 
| conformer | performer | 
| uniformer | transformer | 
| nonconformer | nonperformer | 
| autotransformer | counterreformer | 
Note: These 12 words that end with 'former' are found from the USA & Canada version of the tournament Scrabble word list.