There are 15 12-letter words that end with 'tering'.
| bespattering | carpentering | charactering |
| concentering | encountering | sequestering |
| slaughtering | outmastering | overwatering |
| rechartering | replastering | telemetering |
| uncluttering | unflattering | upholstering |
Note: These 15 12-letter words that end with 'tering' are found from the USA & Canada version of the tournament Scrabble word list.