parents – children
part – whole
partial – total
particular – general
pass – fail
past – future
peace – war
permit – forbid
plant – harvest
plenty – lack
pleasant – awful
polite – rude
poor – rich
poverty – wealth
powerful – weak

presence – absence
present – past
pretty – ugly
private – public
probably – certainly
professional – amateur
protect – attack
protection – attack
public – private
pull – push
pupil – teacher
push – pull
question – answer
quick – slow
quiet – loud