There are 21 words that start with 'rudd'.
| rudd | rudds | ruddy | 
| rudder | ruddle | rudders | 
| ruddier | ruddily | ruddled | 
| ruddles | ruddock | ruddiest | 
| ruddling | ruddocks | ruddiness | 
| ruddleman | ruddlemen | rudderless | 
| rudderpost | rudderposts | ruddinesses | 
Note: These 21 words that start with 'rudd' are found from the USA & Canada version of the tournament Scrabble word list.