There are 20 8-letter words that start with 'comm'.
| commando | commands | commence | commends | 
| comments | commerce | commixed | commixes | 
| commodes | commoner | commonly | commoved | 
| commoves | communal | communed | communer | 
| communes | commuted | commuter | commutes | 
Note: These 20 8-letter words that start with 'comm' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with commu, comme, commi, commo, comma, commy.
5-letter words start with 'comm' (2)