There are 13 12-letter words that start with 'pet'.
| petitenesses | petrifaction | petrodollars |
| petrogeneses | petrogenesis | petrogenetic |
| petrographer | petrographic | petrological |
| petrologists | pettifoggers | pettifoggery |
| pettifogging | ||
Note: These 13 12-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)