There are 276 15-letter words that end with 'ies'.
Note: These 276 15-letter words that end with 'ies' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with ties, ries, cies, gies, lies, nies, fies, hies, mies, dies, pies, sies, kies, bies, xies, vies, zies, uies, wies, oies, yies.
4-letter words end with 'ies' (7)