There are 13 words that start with 'piggi'.
| piggie | piggin | 
| piggier | piggies | 
| pigging | piggins | 
| piggish | piggiest | 
| pigginess | piggishly | 
| pigginesses | piggishness | 
| piggishnesses | |
Note: These 13 words that start with 'piggi' are found from the USA & Canada version of the tournament Scrabble word list.