There are 20 words that start with 'room'.
| room | rooms | roomy | 
| roomed | roomer | roomie | 
| roomers | roomful | roomier | 
| roomies | roomily | rooming | 
| roomette | roomfuls | roomiest | 
| roommate | roomettes | roominess | 
| roommates | roominesses | |
Note: These 20 words that start with 'room' are found from the USA & Canada version of the tournament Scrabble word list.