There are 7 13-letter words that end with 'ks'.
| counterchecks | electroshocks |
| gobbledegooks | gobbledygooks |
| kinnikinnicks | tiddledywinks |
| walkingsticks | |
Note: These 7 13-letter words that end with 'ks' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with cks, rks, nks, oks, aks, lks, sks, iks, eks, uks, wks, yks.
4-letter words end with 'ks' (17)