There is 1 13-letter word that end with 'ast'.
blepharoplast | |
Note: These 1 13-letter words that end with 'ast' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with last, cast, fast, east, mast, oast, iast, past, bast, hast, tast, gast, nast, rast, vast, wast.
4-letter words end with 'ast' (12)