There are 11 words that start with 'hexap'.
| hexapla | hexapod | hexaplar | 
| hexaplas | hexapods | hexapody | 
| hexaploid | hexaploids | hexaploidy | 
| hexapodies | hexaploidies | |
Note: These 11 words that start with 'hexap' are found from the USA & Canada version of the tournament Scrabble word list.