There are 12 words that start with 'overru'.
| overrun | overrude | overruff |
| overrule | overruns | overruffs |
| overruled | overrules | overruffed |
| overruling | overruffing | overrunning |
Note: These 12 words that start with 'overru' are found from the USA & Canada version of the tournament Scrabble word list.