There are 14 12-letter words that end with 'oned'.
| cobblestoned | commissioned | complexioned |
| herringboned | miscaptioned | preportioned |
| pretensioned | processioned | proportioned |
| repositioned | unchaperoned | unillusioned |
| unquestioned | unsanctioned | |
Note: These 14 12-letter words that end with 'oned' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with ioned, ooned, toned, soned, roned, boned, eoned, honed, poned, zoned, doned, goned, koned, noned, coned, loned, moned, yoned.
5-letter words end with 'oned' (5)