There are 11 11-letter words that end with 'nia'.
| bibliomania | aniseikonia | christiania |
| hebephrenia | hypercapnia | megalomania |
| kleptomania | nymphomania | spermagonia |
| quinquennia | rhizoctonia | |
Note: These 11 11-letter words that end with 'nia' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with onia, ania, enia, inia, nnia, mnia, pnia, gnia, hnia, rnia, unia, vnia, wnia.
4-letter words end with 'nia' (1)