There are 20 8-letter words that start with 'pac'.
| pachadom | pachalic | pachinko | pachisis | 
| pachouli | pachucos | pacified | pacifier | 
| pacifies | pacifism | pacifist | packable | 
| packaged | packager | packages | packeted | 
| packings | packness | packsack | pactions | 
Note: These 20 8-letter words that start with 'pac' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with pack, paci, pach, pace, pact, paca, pacl, pacs, pacy.
4-letter words start with 'pac' (6)