There are 5 12-letter words that end with 'ass'.
| disembarrass | hardinggrass | johnsongrass |
| thoroughbass | weatherglass | |
Note: These 5 12-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)