There are 15 words that end with 'outer'.
| outer | couter | pouter | router | 
| souter | touter | clouter | grouter | 
| flouter | scouter | shouter | spouter | 
| stouter | accouter | devouter | |
Note: These 15 words that end with 'outer' are found from the USA & Canada version of the tournament Scrabble word list.