There are 11 words that start with 'subcom'.
| subcompact | subcompacts | 
| subcommittee | subcommunity | 
| subcomponent | subcommission | 
| subcommittees | subcomponents | 
| subcommissions | subcommunities | 
| subcommissioned | |
Note: These 11 words that start with 'subcom' are found from the USA & Canada version of the tournament Scrabble word list.