There are 12 words that start with 'maint'.
| maintop | maintain | 
| maintops | maintains | 
| maintained | maintainer | 
| maintainers | maintaining | 
| maintenance | maintainable | 
| maintenances | maintainability | 
Note: These 12 words that start with 'maint' are found from the USA & Canada version of the tournament Scrabble word list.