There are 13 12-letter words that start with 'hel'.
| heldentenors | helicoptered | heliocentric |
| heliographed | heliographic | heliolatries |
| heliolatrous | heliospheres | heliotropism |
| hellaciously | hellgrammite | helmsmanship |
| helplessness | ||
Note: These 13 12-letter words that start with 'hel' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with heli, hell, helm, help, helo, helv, held.
4-letter words start with 'hel' (5)