There are 19 5-letter words that end with 'ack'.
| aback | alack | black | clack | crack |
| flack | knack | kyack | plack | shack |
| slack | smack | snack | stack | quack |
| thack | track | whack | wrack | |
Note: These 19 5-letter words that end with 'ack' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with back, rack, jack, pack, lack, tack, sack, hack, nack, wack, iack, mack, yack, uack.
4-letter words end with 'ack' (11)