There are 11 words that start with 'blab'.
| blab | blabs |
| blabby | blabbed |
| blabber | blabbers |
| blabbing | blabbered |
| blabbering | blabbermouth |
| blabbermouths | |
Note: These 11 words that start with 'blab' are found from the USA & Canada version of the tournament Scrabble word list.