Numerous 4 letter words begin with the letter p. A few of those words include pace, pack, pact, pads, page, paid, pail, pain, pair, pale, palm, pane, pang, pans, pant, papa, pare, park, pars, part, pass, past, pate, path, pave, pawn, pays, peak, peal, pear, peas, peat, peck, peek, peel, peep, peer, pegs, pelt, pens, perk, perm, peso, pest, pets, pews, pier, pies, pigs, pike, pine, ping, pink, pins, pint, pipe, pits, pity, plan, play, plea, plod, plop, plow, ploy, plug, plum, plus, pods, poem, poet, poke, poky, pole, poll, polo, pomp, pond, pony, pool, poor, pope, pork, port, post, pots, pour, pout, pray, prep, prom, pros, pubs, puff, pull, pump, punk, punt, pure, push and putt.
poll
pope
puck
pull pipe
phony, peony, peace, place, pixel, parts, punch, power, pithy, pyres
Pregnant
Princess!
some words include:pabulumspachadompachalicpachinkopachisispachoulipachucospacifiedpacifierpacifiespacifismpacifistpackablea full list of words beginning with P containing 8 letters can be found here (see related links), although this list doesn't include every 8 letter word containing the letter P.
people
plans
Particle.
8 letter words w/final letter P:raindropairstripback-flipbackdropsubgroupsidesteptownshipdoorstopbackstopworkshoplordshiphockshopteardropbookshoplollipoplockstepsidestepscrew-topoversteplong-jumpnightcappawnshopfiretrapfollowupbullwhipchange-upblacktopbakeshop
"Pristine" is a word that can be synonymous with holy and starts with the letter P.
prow
peripheral
props
poignant
presume