There are 94 11-letter words that end with 'is'.
Note: These 94 11-letter words that end with 'is' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with sis, tis, ris, lis, nis, xis, his, kis, mis, ais, dis, ois, bis, eis, uis, jis, pis, gis, vis, cis, wis, zis, fis, iis, qis, yis.
3-letter words end with 'is' (15)