There are 14 13-letter words that end with 'king'.
| bottlenecking | buttonhooking | 
| cabinetmaking | heartbreaking | 
| housebreaking | hydrocracking | 
| motherfucking | mountebanking | 
| fingerpicking | rubbernecking | 
| streetwalking | subnetworking | 
| switchbacking | troublemaking | 
Note: These 14 13-letter words that end with 'king' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with cking, aking, nking, rking, oking, lking, sking, iking, eking, uking, kking, wking, yking.
5-letter words end with 'king' (1)