There are 30 8-letter words that end with 'oing'.
Note: These 30 8-letter words that end with 'oing' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with going, ooing, doing, loing, toing, hoing, coing, eoing, boing, ioing, roing, moing, voing, aoing, koing, poing, soing, yoing.
5-letter words end with 'oing' (3)