Nothing to Pant Nothing Notice (noun) Notice (verb) Notice Board * Not Reachable Novel November Now Now! Number Number One Numbered Nurse Nursing Home Nut O Object Objection, Your Honour! Observe Observation Occasion Occupy Occupied Occupancy Occupant Occupation October Octopus Odd Man Out Of Of Course Off * Off (noun) * Off (verb) Off White Offend Offer (noun) Offer (verb) Office Office Boy Officer * Officery Official Oh! Oh, God! Oh, Great! Oh, My God! Oh, No! Oh, No, This Is Impossible! Oh, Really? Oh, That Oil OK! OK, Bye! OK, Bye, Goodnight! OK, Sir! OK, Then OK (noun) OK (verb) Old-Fashioned Omelette On *On (verb) On Account On Paper Once One Online (adjective) On Line (adverb) Open (verb) Open and Shut Open Air (noun) Open Air (adjective) Openly Open Shirt Opener Operate Opinion Opposite Optical Fibre Option Orange Orange Juice Orchestra Orchid Order (noun) Order (verb) Order, Order! Orderly Office Organ Organ Recital Organization Organizational Behaviour Orgasm Original Original Copy * Originate Ouch! Out (adverb) Out (adjective) Out! Out Of Out of this World Outdoor Outing Outsider Oven Over (noun) Over (adverb) Over Age Overall Overcoat Overdraft Overreact Overtake Overtime Owner Ownership Oxygen Oxygen Mask P P.A. Pack (verb) * Pack [packed] Pad Page Page Number Pager Paid Paid Seat Painkiller Painkiller Tablet Paint (noun) Paint (verb) Paint Brush Painter Painting Palette Pamphlet * Pant * Patloon