There are 16 words that start with 'cobb'.
| cobb | cobbs | cobby |
| cobber | cobble | cobbers |
| cobbier | cobbled | cobbler |
| cobbles | cobbiest | cobblers |
| cobbling | cobblestone | cobblestoned |
| cobblestones | ||
Note: These 16 words that start with 'cobb' are found from the USA & Canada version of the tournament Scrabble word list.