Omission vs. Ommision
Outrageous vs. Outragous
Parliament vs. Parliment
Perceive vs. Percieve
Persistent vs. Persistant
Philippines vs. Phillipines
Plagiarize vs. Plagerize
Politician vs. Politican
Potatoes vs. Potatos
Preferred vs. Prefered
Privilege vs. Privelege
Professor vs. Professer
Pronunciation vs. Pronounciation
Prophecy vs. Prophecy
Publicly vs. Publically
Questionnaire vs. Questionaire
Readable vs. Readible
Receipt vs. Reciept
Recommend vs. Recomend
Referred vs. Refered
Original vs. Orignal
Parallel vs. Paralel
Pastime vs. Passtime
Perseverance vs. Perseverence
Personnel vs. Personell
Piece vs. Peice
Playwright vs. Playright
Possession vs. Posession
Precede vs. Preceed
Presence vs. Presance
Privilege vs. Priviledge
Promise vs. Promiss
Proof vs. Prufe
Protester vs. Protestor
Quarantine vs. Quarentine
Queue vs. Que
Really vs. Realy
Receive vs. Recieve
Reference vs. Referance
Relevant vs. Relevent