There are 21 words that end with 'nian'.
banian | eonian | aeonian |
actinian | demonian | devonian |
hominian | iguanian | melanian |
favonian | sirenian | amazonian |
chelonian | chthonian | daltonian |
draconian | gorgonian | plutonian |
vulcanian | calypsonian | parkinsonian |
Note: These 21 words that end with 'nian' are found from the USA & Canada version of the tournament Scrabble word list.