There are 16 words that end with 'ummer'.
| bummer | cummer | gummer | 
| hummer | mummer | rummer | 
| summer | drummer | glummer | 
| grummer | plummer | scummer | 
| slummer | strummer | thrummer | 
| midsummer | ||
Note: These 16 words that end with 'ummer' are found from the USA & Canada version of the tournament Scrabble word list.