There are 14 words that start with 'bookm'.
| bookman | bookmen | bookmark | 
| bookmaker | bookmarks | bookmakers | 
| bookmaking | bookmarked | bookmarker | 
| bookmobile | bookmakings | bookmarkers | 
| bookmarking | bookmobiles | |
Note: These 14 words that start with 'bookm' are found from the USA & Canada version of the tournament Scrabble word list.