There are 14 11-letter words that end with 'acks'.
| canvasbacks | cornerbacks | crackajacks |
| hackmatacks | hydrocracks | lumberjacks |
| fiddlebacks | knickknacks | silverbacks |
| smokestacks | superflacks | supplejacks |
| switchbacks | turtlebacks | |
Note: These 14 11-letter words that end with 'acks' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with backs, racks, jacks, packs, lacks, tacks, sacks, hacks, nacks, wacks, iacks, macks, uacks, yacks.
5-letter words end with 'acks' (11)