There are 9 13-letter words that end with 'ully'.
disgracefully | distastefully |
distressfully | distrustfully |
mistrustfully | reproachfully |
resourcefully | suspensefully |
unbeautifully | |
Note: These 9 13-letter words that end with 'ully' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with fully, bully, cully, dully, gully, oully, sully.
5-letter words end with 'ully' (6)