Starts with P, Ends with S!

Process

 

Puss…. You see where I’m going with that lol

 

Precipitous

 

Precious

 

Progress

 

Priorities

 

Pasties

 

Pleasure

 

Papis Princess

 

Positivities

 

Parsnips

 

Prerogatives

 

Preparations

 

Prescriptions

 

Pass

 

Physics

 

Physicals

 

Phenomenon(s) but say it like Animal from the Muppets

 

Phosphorus

 

Plus

 

Penis

 

Peace Makers

 

Puppies

 

Peas

 

Pliers

 

Pines

 

Pintos

 

Pleasers

 

Promises

 

Purifies

 

Pretentious (but I don't know anyone who is)

 

Particulars

 

Pliers

 

Pies!
(Came to mind because I’m dying to bake some)

 

peeks