There are 15 words that start with 'tumble'.
| tumble | tumbled | tumbler |
| tumbles | tumblers | tumblebug |
| tumbleset | tumblebugs | tumbledown |
| tumblerful | tumblesets | tumbleweed |
| tumblerfuls | tumblersful | tumbleweeds |
Note: These 15 words that start with 'tumble' are found from the USA & Canada version of the tournament Scrabble word list.