Rzeczownik z ang. na O
- Orange
- Owl
- Oil
- Octopus
- Onion
- Oak
- Oven
- object
- office
- Ostrich
- Olive
- Order
- Orgasm
- Ocean
- October
- Open
- Oat
- one
- Oval
- Out
- Oyster
- owen
- Opera
- Ornament
- Orphan
- Other
- Owner
- Old
- Opportunity
- Opium
- Oman
- Oral
- Online
- Opener
- Oatmeal
- Oracle
- Okey
- okay
- Our
- Over
- only
- officer
- Oxygen
- Orchestra
- Odd
- Orangutan
- Otter
- Opening
- offer
- Orc
- opposite
- Oats
- Orca
- Ocular
- Older
- Olive oil
- Oscar
- organ
- Organization
- Outlet
- Oreo
- olives
- Okno
- operator
- Opal
- omen
- Outside
- Olivia
- obstacle
- Oak wood
- Obvious
- obesity
- Ornitology
- oh my god
- original
- o'block
- orange juice
- Oculus
- own
- Option
- Ogre
- Optimist
- omega
- Overthinking
- Oklahoma
- omlette
- Ozone
- Ore
- Obviously
- Ointment
- Oath
- Orb
- Ork
- ono
- Optitian
- Ordinary
- Occasion
- Opinion
- Ombre
Slová v zozname Rzeczownik z ang. na O pochádzajú od hráčov slovnej hry Meno, Mesto, Zviera, Vec.