partrige, pudding, etc.
pepperoni
Primper.
phenomenal
There are no 23 letter words in the English language starting with the letter p.
plaza
Some 10 letter P words:partialityparticularpermissionpersonallyprecautionpresupposepronouncedproportionprejudicedproportionprefermentprepaymentpreachmentplacementspracticingpercentileproductivepermissiveprovisionsprotectionprovention
procrastinate
pi
phenomenal
Primper.
pepperoni
preposterous
There are no 23 letter words in the English language starting with the letter p.
popcorn
prize
pressed
penitence