There are 6 14-letter words that end with 'sting'.
| autosuggesting | disinteresting | 
| flabbergasting | overharvesting | 
| rebroadcasting | underthrusting | 
Note: These 6 14-letter words that end with 'sting' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with asting, esting, isting, usting, osting, rsting, ysting, wsting.
7-letter words end with 'sting' (35)