There are 20 8-letter words that start with 'x'.
| xanthans | xanthate | xanthein | xanthene |
| xanthine | xanthins | xanthoma | xanthone |
| xanthous | xenogamy | xenogeny | xenolith |
| xerosere | xeroxing | xiphoids | xylidine |
| xylidins | xylitols | xylocarp | xylotomy |
Note: These 20 8-letter words that start with 'x' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with xe, xy, xa, xi, xu.
2-letter words start with 'x' (2)