There are 5 15-letter words that end with 'ency'.
| countertendency | interdependency |
| nonbelligerency | superefficiency |
| superintendency | |
Note: These 5 15-letter words that end with 'ency' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with gency, dency, iency, tency, lency, cency, uency, rency, nency, bency, mency, vency.
6-letter words end with 'ency' (1)