There are 13 words that start with 'combu'.
| combust | combusts |
| combusted | combustor |
| combusting | combustion |
| combustive | combustors |
| combustible | combustibly |
| combustions | combustibles |
| combustibility | |
Note: These 13 words that start with 'combu' are found from the USA & Canada version of the tournament Scrabble word list.