There are 13 words that end with 'erning'.
| kerning | caverning | 
| decerning | governing | 
| interning | secerning | 
| discerning | concerning | 
| patterning | misgoverning | 
| repatterning | overgoverning | 
| overconcerning | |
Note: These 13 words that end with 'erning' are found from the USA & Canada version of the tournament Scrabble word list.