· parsnip
· partisanship
· partnership
· pawnshop
· penmanship
· pickup
· pileup
· pinesap
· pinup
· plop
· plump
· pomp
· pop
· preamp
· premiership
· prep
· primp
· professorship
· prop
· proprietorship
· pulp
· pump
· pup
· pushup
Partnership
There are no 23 letter words in the English language starting with the letter p.
paralegalparamountpassengerpermanentperfectedplacementplasteredprosperedproducingpreparingpracticedpracticalprovisionproactiveprotectedprocedureprojectedprojectedperfectedpromotionpresenterporcupinepossessiveproclivitypopulatedpartridgepronounceprofanitypreoccupypulverizepreviewedprocuringprocedurepostulatepatricideparalyzedparagraphparachuteprosperedpatchworkprimitiveprobativepageantry
gyps, gaps, gape
zapp
Peter Pan collar
There are 4 letter words that begin with the letter g and contain the letter p. However, there are no 4 letter words in the English language that begin with the letters gp.
Some science words that begin with the letter P are: protein, protease, probiotic, permeable, phylum. Additionally, the branch of science known as physics starts with the letter P.
Keep and kelp are four letter words starting with K and ending with P.
Predicament and pickle are other words for problem. They begin with the letter p.
In words starting with pt-, the p is silent (as pterygium). In words starting with PS-, also the p is silent (psycho-<whatever> or pseudo-<whatever>). In phthisis the pH is silent. I seem to be stuck on the letter "p" right now, but I am sure there are words with other silent letters.
papaw, pilaw, pshaw