There are 11 13-letter words that end with 'ials'.
| bicentennials | antimalarials |
| bimillennials | differentials |
| interglacials | interstadials |
| nonessentials | quinquennials |
| preceptorials | presbyterials |
| superspecials | |
Note: These 11 13-letter words that end with 'ials' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with rials, nials, tials, cials, dials, mials, bials, pials, vials, hials, sials, uials.
5-letter words end with 'ials' (4)