There are 36 7-letter words that end with 'ack'.
Note: These 36 7-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)