There are 7 15-letter words that start with 'hom'.
| homeopathically | homogeneousness | 
| homogenisations | homogenizations | 
| homosexualities | homosocialities | 
| homotransplants | |
Note: These 7 15-letter words that start with 'hom' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with homo, home, homi, homa, homb, homm, homu, homy.
4-letter words start with 'hom' (3)