OK old on once one onion only onto open opening openly operate operation opinion opponent opportunity oppose opposed opposing opposite opposition option or orange order ordinary organ organization organize organized origin original originally other otherwise ought our ours ourselves out outdoor outdoors outer outline output outside outstanding oven over overall overcome owe own owner p pace pack package packaging packet page pain painful paint painter painting pair palace pale pan panel pants paper parallel parent park parliament part particular particularly partly partner partnership party pass passage passenger passing passport past path patience patient pattern pause pay payment peace peaceful peak pen pence pencil penny pension people pepper per perfect perfectly perform performance performer perhaps period permanent permanently permission permit person personal personality personally persuade pet petrol phase philosophy phone photocopy photograph photographer photography phrase physical physically physics piano pick picture piece pig pile pill pilot pin pink pint pipe pitch pity place plain plan plane planet planning plant plastic plate platform play player pleasant pleasantly please pleased pleasing pleasure plenty plot plug plus pocket poem poetry point pointed poison poisonous pole police policy polish polite politely political politically politician politics pollution pool poor pop popular population port pose position positive possess possession possibility possible possibly post pot potato potential potentially pound pour powder power powerful practical practically practice praise prayer precise precisely predict prefer preference pregnant premises preparation prepare prepared presence present presentation preserve president press pressure presumably pretend pretty prevent previous previously price pride priest primarily primary prime prince princess principle print printer printing prior priority prison prisoner private privately prize probable probably problem procedure proceed process produce producer product production profession professional professor profit program programme progress project promise promote promotion prompt promptly pronounce pronunciation proof proper properly property proportion proposal propose prospect protect protection protest proud proudly prove provide provided pt abbr.  pint pub public publication publicity publicly publish publishing pull punch punish punishment pupil purchase pure purely purple purpose pursue push put qualification qualified qualify quality quantity quarter queen question quick quickly quiet quietly quit quite quote race racing radio rail railway rain raise range rank rapid rapidly rare rarely rate rather raw re- prefix reach react reaction read reader reading ready real realistic reality realize really rear reason reasonable reasonably recall receipt receive recent recently reception reckon recognition recognize recommend record recording recover red reduce reduction refer reference reflect reform refrigerator refusal refuse regard regarding region regional register regret regular regularly regulation reject relate related relation relationship relative relatively relax relaxed relaxing release relevant relief religion religious rely remain remaining remains remark remarkable remarkably remember remind remote removal remove rent rented repair repeat repeated repeatedly replace reply report represent representative reproduce reputation request require requirement rescue research reservation reserve resident resist resistance resolve resort resource respect respond response responsibility responsible rest restaurant restore restrict restricted restriction result retain retire retired retirement return reveal reverse review revise revision revolution reward rhythm rice rich rid ride rider ridiculous riding right rightly ring rise risk rival river road rob rock role roll romantic roof room root rope rough roughly round rounded route routine row royal rub rubber rubbish rude rudely ruin ruined rule ruler rumour run runner running rural rush sack sad sadly sadness safe safely safety sail sailing sailor salad salary sale salt salty same sample sand satisfaction satisfied satisfy satisfying