There are 12 14-letter words that end with 'rian'.
| disciplinarian | ichthyosaurian | 
| ethnohistorian | latitudinarian | 
| nonutilitarian | septuagenarian | 
| solitudinarian | predestinarian | 
| premillenarian | protohistorian | 
| uniformitarian | valetudinarian | 
Note: These 12 14-letter words that end with 'rian' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with arian, orian, urian, erian, trian, prian, yrian.
6-letter words end with 'rian' (2)