There are 14 12-letter words that end with 'eous'.
| advantageous | argillaceous | carbonaceous |
| diatomaceous | discourteous | gallinaceous |
| porcelaneous | pectinaceous | percutaneous |
| simultaneous | orchidaceous | subcutaneous |
| succedaneous | uncourageous | |
Note: These 14 12-letter words that end with 'eous' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with ceous, neous, teous, geous, reous, seous, ueous, meous, veous, beous, deous, leous.
5-letter words end with 'eous' (1)