There are 7 13-letter words that start with 'pet'.
| petrifactions | petrification |
| petrochemical | petrographers |
| petrographies | pettifoggings |
| pettishnesses | |
Note: These 7 13-letter words that start with 'pet' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with petr, pett, peta, peti, petu, petn, pete, pets, petc.
4-letter words start with 'pet' (1)