There are 18 10-letter words that start with 'hal'.
| halachists | halakhists | halenesses |
| halfnesses | halftracks | hallelujah |
| hallmarked | halobionts | halocarbon |
| haloclines | halogenate | halogenous |
| halogetons | halophiles | halophilic |
| halophytes | halophytic | halothanes |
Note: These 18 10-letter words that start with 'hal' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with hall, halo, hala, half, hali, halt, hale, halv, halb, halm, halc, halu, haly.
4-letter words start with 'hal' (6)