Opposite Words – O
occasionally – frequently
occupied – vacant
odd – even
off – on
often – seldom
old – modern
on – off
open – closed
open – closed
opponent – supporter
outside – inside
outskirts – centre
over – under
Opposite Words – P
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
protection – attack
public – private
pull – push
pupil – teacher
push – pull