perennial vs. repeated
persistent vs. relentless
persistent vs. unrelenting
persistent vs. tenacious
periodic vs. periodical
perpetual vs. unceasing
perpetual vs. unending
polemic vs. polemical
polemic vs. polemicist
polemic vs. polemist
perverse vs. wayward
perverted vs. twisted
Praetorian vs. Pretorian
peasant vs. provincial
pokey vs. poky
pokey vs. slammer
prying vs. snoopiness
placoid vs. platelike
perforated vs. pierced
perforate vs. perforated
perforated vs. punctured
penetrate vs. perforate
profound vs. unsounded
prideful vs. triumphant
prideful vs. swaggering
pressing vs. urgent
press vs. pressing
precative vs. precatory
plagiaristic vs. plagiarized
plagiarised vs. plagiaristic
parasitic vs. parasitical
pillaged vs. plundered
pillaged vs. ransacked
partisan vs. partizan
partisan vs. zealot
protected vs. saved
politic vs. smooth
preferable vs. preferred
pet vs. preferred
preferent vs. preferred
pathetic vs. silly
pathetic vs. pitiable
pathetic vs. pitiful
pacific vs. peaceable
propitiative vs. propitiatory
perceiver vs. percipient
predominant vs. rife
perspicacious vs. sagacious
perspicacious vs. sapient
predominate vs. rule
predominate vs. reign
predominate vs. prevail
predominate vs. tower
potty vs. tiddly
potty vs. tipsy
potty vs. smitten
potty vs. throne
peppy vs. spirited
premature vs. untimely
projectile vs. rocket
propellant vs. propellent
propellant vs. propelling
propellant vs. propulsive
penetrating vs. penetrative
penetrative vs. sharp
penetrating vs. sharp
precarious vs. unstable
parlous vs. precarious
perilous vs. precarious
precarious vs. shaky
piercing vs. sharp
pissed vs. tight
pissed vs. roiled
pixilated vs. tight
pixilated vs. wicked
pixilated vs. prankish
pixilated vs. puckish
plastered vs. tight
plastered vs. sealed
plastered vs. slicked
pareve vs. parve
plod vs. plodding
prerequisite vs. requirement
philosophic vs. philosophical
phlegmatic vs. phlegmatical
preliminary vs. prelude
prelim vs. preliminary
practical vs. pragmatic
practical vs. virtual
pitiful vs. sorry
paean vs. panegyric
panegyric vs. pean
probing vs. searching
perfect vs. perfective
perfect vs. stark
permutable vs. transposable
plane vs. planer
plane vs. sheet
plane vs. shave
plane vs. skim
pedestrian vs. prosaic
prosaic vs. prosy
private vs. secret
practiced vs. practised
practiced vs. skillful
practiced vs. proficient
practiced vs. skilful
protractible vs. protractile
protrusible vs. protrusile
pernickety vs. persnickety
persnickety vs. snotty
prehistoric vs. prehistorical
perfidious vs. punic
punic vs. treacherous
prompt vs. straightaway
prompt vs. prompting
prompt vs. remind
portly vs. stout
penurious vs. pinched
penniless vs. pinched
prissy vs. puritanical
priggish vs. prissy
prim vs. prissy
prissy vs. prudish
prissy vs. straitlaced
prissy vs. straightlaced
Victorian vs. prissy
prissy vs. victorian
particular vs. special
particular vs. specific
premier vs. premiere
PM vs. premier
premier vs. prime
polished vs. svelte
penult vs. penultimate
penultima vs. penultimate
poor vs. short
perfumed vs. sweet
perfumed vs. scented
palmate vs. pedate
palmatifid vs. pedate
pliable vs. waxy
pliable vs. pliant
pliable vs. tensile
pliable vs. tractile
pliant vs. waxy
productive vs. rich
prevailing vs. rife
prevalent vs. rife
proprietary vs. proprietorship
phoney vs. phony
phony vs. pretender
parsimonious vs. penurious
particularised vs. particularized
precipitous vs. sharp
precipitate vs. precipitous
precipitant vs. precipitous
perpendicular vs. sharp
perpendicular vs. vertical
preventative vs. prophylactic
preventive vs. prophylactic
prophylactic vs. safety
petrous vs. stonelike
prejudicial vs. prejudicious
palatal vs. palatalized
palatal vs. palatalised
palatal vs. palatine
preventative vs. preventive
pathologic vs. pathological
paederastic vs. pederastic
perturbing vs. worrisome
paradisiac vs. paradisiacal
paradisaical vs. paradisiacal
paradisaic vs. paradisiacal
paradisal vs. paradisiacal
prone vs. prostrate
peaky vs. spiky
pitiless vs. unkind
pitiless vs. remorseless
pitiless vs. ruthless
pitiless vs. unpitying
placeable vs. recognizable
patrimonial vs. transmissible
penal vs. punishable
pensive vs. wistful
pensive vs. reflective
pedestrian vs. walker
petite vs. wee
portentous vs. prodigious
patrilineal vs. patrilinear
platyrrhine vs. platyrrhinian
platyrhine vs. platyrrhinian
platyrhinian vs. platyrrhinian
platyrrhinian vs. platyrrhinic
poetic vs. poetical
puny vs. runty
puny vs. shrimpy
polysyllabic vs. sesquipedalian