There are 10 words that start with 'felo'.
| felon | felons | 
| felony | felonry | 
| felonies | felonious | 
| felonries | feloniously | 
| feloniousness | feloniousnesses | 
Note: These 10 words that start with 'felo' are found from the USA & Canada version of the tournament Scrabble word list.