There are 3 15-letter words that start with 'hor'.
| horizontalities | horticulturally |
| horticulturists | |
Note: These 3 15-letter words that start with 'hor' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with hors, horn, horr, horo, hori, hort, hord, horm, hora, hore.
4-letter words start with 'hor' (2)