There are 17 words that end with 'oso'.
| proso | whoso |
| arioso | amoroso |
| mafioso | furioso |
| nitroso | oloroso |
| doloroso | gracioso |
| grazioso | maestoso |
| vigoroso | virtuoso |
| grandioso | spiritoso |
| supervirtuoso | |
Note: These 17 words that end with 'oso' are found from the USA & Canada version of the tournament Scrabble word list.