IMOYSUP
Make words with P
Never: plural or third-person -S
Sadly, PSYOPS is always pluralized...
Missed: POPSY
IMPIOUS MUMPS OOPS OPIUM OPOSSUM OPUS PIMP PIOUS PISS PISSY POMP POMPOUS POOP POOPY POPPY POSSUM POSY PUMP PUPPY PUPU PUSS PUSSY SOPPY SOUP SOUPY SUMP SYMPOSIUM
Pangrams: SYMPOSIUM
score: 105