There are 13 10-letter words that end with 'ass'.
| bromegrass | bunchgrass | contrabass |
| goosegrass | groundmass | lemongrass |
| fiberglass | fibreglass | interclass |
| plateglass | superclass | underclass |
| witchgrass | ||
Note: These 13 10-letter words that end with 'ass' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with rass, lass, pass, mass, bass, eass, vass, dass, gass, tass, cass, iass, kass, sass, uass, yass.
4-letter words end with 'ass' (6)