There are 15 9-letter words that end with 'iously'.
| biliously | anxiously | curiously |
| deviously | copiously | dubiously |
| enviously | furiously | impiously |
| noxiously | obviously | seriously |
| tediously | variously | viciously |
Note: These 15 9-letter words that end with 'iously' are found from the USA & Canada version of the tournament Scrabble word list.