Nouns with O
- A common noun; fruit and color starting with O. 
- Real animal noun; owl fits the O group. 
- Everyday food noun; onion works perfectly. 
- Common noun; a fruit and source of oil. 
- General English noun; simple and valid. 
- Household item noun; oven clearly fits. 
- Sea creature noun; a real octopus. 
- Common geographic noun; ocean is generic. 
- Used as a noun for a shape; oval counts. 
- Everyday substance noun; oil is fine. 
- Real bird noun; ostrich is a valid O noun. 
- Common noun for a desert water spot. 
- Real animal noun; orangutan fits nicely. 
- Gemstone noun; opal is a real word. 
- otter
- Office
- organ
- Oat
- Oreo
- Oatmeal
- Open
- Oliver
- Oak
- Ornament
- Opera
- One
- Outside
- Omar
- Olivia
- Oregon
- Oman
- octagon
- Oyster
- Owner
- Ogre
- orb
- Oranges
- Omen
- Oats
- Ounce
- October
- Out
- Ottoman
- Oregano
- Ohio
- Orphan
- Onions
- Omelette
- Olives
- Oxygen
- Oxen
- Ovary
- Otto
- Orbit
- Omega
- Olympics
- Ocelot
- Obelisk
- oar
- oaf
The words in the list Nouns with O come from players of the word game Categories game.