There are 10 words that start with 'repud'.
| repudiate | repudiated | 
| repudiates | repudiator | 
| repudiating | repudiation | 
| repudiators | repudiations | 
| repudiationist | repudiationists | 
Note: These 10 words that start with 'repud' are found from the USA & Canada version of the tournament Scrabble word list.