Is 'O' a vowel or a consonant?

The letter O is a vowel in the English alphabet. It is one of the five standard vowels used to form syllables.

What are some common words that start with O?

Some common words starting with O include various common terms. These words are frequently used in everyday English communication.

What is the longest word starting with O?

There are many long words starting with O, often found in scientific or medical terminology. Exploring our O-words by length list above can help you find high-value words for word games.

Are there any two-letter words starting with O for Scrabble?

Yes, there are usually valid two-letter words starting with O that are accepted in Scrabble. These short words are incredibly useful for clearing your rack and scoring parallel points.

How is the letter O pronounced in American English?

In American English, the letter O is pronounced with its distinct alphabetical sound. However, its pronunciation can change slightly depending on its position in a word and the letters surrounding it.

Words Starting
With O

Explore the vast world of "O" words. Filter by two-letter combinations below to find exactly what you need. Perfect for students, teachers, and word game enthusiasts.

Explore Words

Total Words

All oa ob oc od oe of og oh oi oj ok ol om on oo op oq or os ot ou ov ow ox oy oz

Words Starting With On

No Words Found

We couldn't find any words starting with "O" for the combination "On" in our dictionary. Try selecting another combination!

Origin of the Letter O

Why is 'O' shaped and used the way it is?

The letter 'O' traces its roots back to the Phoenician alphabet around 1000 BCE. The Phoenicians called it "Ayin". Originally a drawing of a human eye. The Greeks simplified the circle into Omicron (O) which passed directly to Latin.

The Evolution

Phoenician: Ayin (Meaning: Eye)

Original Symbol: 𐤏

Greek & Latin: Adapted into the modern shape.

Modern English: O

Usage & Significance

Understanding the origin of 'O' helps with spelling, pronunciation, and recognizing root words in modern English vocabulary.

O Words by Length

Quick reference for O-words sorted by character count.

Length	Common Words	Scrabble Point Value Avg
3 Letters	OAD, OAF, OAK	3 - 6 pts
4 Letters	OAFS, OPEN	4 - 8 pts
5 Letters	OADAL, OAKEN, OFFER	5 - 10 pts
6 Letters	OAFDOM, OAFISH, OAKBOY, OAKLET	6 - 12 pts
7 Letters	OAKESIA, OAKLAND, OAKLIKE, OAKLING	7 - 14 pts
8 Letters	OAFISHLY, OAKBERRY, ORGANIZE	8 - 16 pts

Explore Other Words

Navigate through the alphabet to find more words.

Words Starting With

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Words Ending With

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Frequently Asked Questions

Common questions about words starting with O.

Test Your Knowledge

Take this 50-question quiz on words starting with O.

1. What is the difference between 'oak' and 'oar'?

Oak is a tree, oar is a boat paddle They mean the same thing Oak is a paddle, oar is a tree Oak is British, oar is American

2. What vowel sound is used in the first syllable of 'oaklike'?

Short 'a' (ah) Long 'o' (oh) Short 'o' (aw) Long 'a' (ay)

3. In which syllable is the primary stress in 'Oakesia'?

First Second Third Fourth

4. What are the two primary meanings of the word 'oakboy'?

A lumberjack and a farmer A tree spirit and an acorn-gathering boy A type of tree and a type of bird A knight and a peasant

5. Which of the following is an 'oaken' object?

A feather pillow A heavy medieval shield A glass window A silk scarf

6. Historically, the root word 'oaf' was believed to be what kind of creature?

A goblin A giant An elf or fairy changeling A dragon

7. What is the etymological origin of the word 'oaf'?

A type of fish An elf or fairy changeling A large ox A Greek god of strength

8. Which of the following is a common collocation with 'offer'?

Offer weather Job offer Offer metal Offer speed

9. How is 'Oakenshaw' correctly pronounced?

oh-KEN-shaw OH-ken-saw OH-ken-shaw oak-EN-shaw

10. How is the word 'oadal' correctly pronounced?

oh-DAL OH-dal AW-dal oo-DAL

11. What is the adjective form of 'oak', often used in literature?

Oakish Oaky Oaken Oakful

12. Why should you not use 'oadal' to describe a modern suburban house?

It only applies to cars It is an archaic term for ancient, feudal-free land It means the house is rented It is illegal

13. What part of speech is 'oakmoss'?

Noun Verb Adverb Preposition

14. Which of the following is a common collocation with 'opportunity'?

Opportunity weather Equal opportunity Opportunity metal Opportunity speed

15. Which of the following is a modern synonym for 'oakberry'?

Acorn Pinecone Chestnut Walnut

16. Which of the following is the best synonym for 'oafishness'?

Elegance Boorishness Clumsiness Finesse

17. Is 'oakboy' a modern industrial term?

Yes, it is used in modern logging No, it is historical or mythological Yes, it is used in tech No, it is a medical term

18. Where is the city of Oakland located?

Inland Texas Southern California The San Francisco Bay Area The Pacific Northwest

19. Which famous fragrance family is defined by the use of oakmoss?

Gourmand Chypre Aquatic Citrus

20. What is the difference between 'oaken' and 'oaklike'?

There is no difference 'Oaken' means made of oak; 'oaklike' means resembling oak 'Oaklike' means made of oak; 'oaken' means resembling oak One is British and one is American

21. Which part of speech is 'oaf'?

Verb Noun Adjective Adverb

22. What part of speech is 'oaken'?

Noun Verb Adjective Adverb

23. Which sentence uses 'oak' correctly as an uncountable material?

The table is made of oaks. We planted three oak in the yard. The floor is solid oak. I saw an oak woods.

24. Is oakmoss safe to eat?

Yes, it is a delicacy Yes, but only when boiled No, it is not edible No, it is highly toxic immediately

25. What does it mean to 'open up' to someone?

To physically open a door for them To start a business with them To talk freely about your feelings To argue with them

26. What part of speech is 'oad'?

Noun Verb Adjective Adverb

27. How is 'oakmoss' treated grammatically?

As a countable noun As an uncountable noun As a verb As an adjective

28. Which phrase is commonly used to emphasize extreme clumsiness?

Pure oafishness Oafishness count The oafishness factor An oafishness of

29. Which sentence uses 'Oakesia' correctly?

I am an Oakesia. He oakesia the car. The genus Oakesia is obsolete. The Oakesia barked.

30. In winemaking, what is 'oak' primarily used for?

Making the bottles Aging the wine in barrels Fertilizing the vines Coloring the grapes

31. What does the phrase 'turn down an offer' mean?

To accept an offer To think about an offer To reject an offer To increase an offer

32. What does the word 'oaken' describe?

Things made of plastic Things made of oak wood Things made of glass Things made of stone

33. What is the modern, standardized legal equivalent of 'oadal'?

Allodial Feudal Leasehold Sectional

34. Can you use 'oad' in the comparative form (e.g., 'oader')?

Yes, always. No, it is a non-gradable dialect word. Only in Scotland. Only for objects, not people.

35. What does the phrase 'open mind' mean?

A brain that is visible A willingness to consider new ideas A door that leads to the brain A person who talks too much

36. What is the surprising etymological origin of the root word 'oaf'?

An ogre An elf or fairy A bear A giant

37. What does the adjective 'oadal' primarily describe?

A type of modern mortgage Land held absolutely without feudal duties A rented apartment A movable piece of property

38. What is the difference between 'observe' and 'notice'?

They mean exactly the same thing. Observe is casual; notice is deliberate. Observe implies deliberate, prolonged study; notice is sudden and casual. Observe is only for hearing; notice is for seeing.

39. Which sentence uses 'oakberry' correctly?

The squirrel cracked the hard oakberry. The oakberry swam in the river. I drove my oakberry to work. She painted the wall oakberry.

40. How should the second syllable of 'oafdom' be pronounced?

Like 'dome' (as in a roof) Like 'dam' (as in water) Like 'dum' (as in dumb) Like 'doom' (as in destruction)

41. Which sentence uses 'observe' correctly to mean 'watching'?

I observed him to sleep. I observed him sleep. I observed him to sleeping. I observed on him sleeping.

42. Oak is classified as what type of wood?

Softwood Hardwood Plywood Particleboard

43. What does the word 'oaf' mean?

A type of bread A mythological elf A clumsy, awkward person A large boat

44. What is the singular form of 'oafs'?

Oaves Oafish Oaf Oafses

45. What does 'oaklike' mean?

Made entirely of oak wood Resembling an oak tree or its strength Disliking oak trees A type of oak leaf

46. Which of the following is an antonym for 'oafish'?

Awkward Graceful Stupid Uncouth

47. Biologically, what is oakmoss?

A true moss A species of lichen A type of algae A parasitic fungus

48. Which sentence is grammatically correct regarding the verb 'open'?

Open me the door. Open the door to me. Open the door for me. Open me to the door.

49. Which sentence uses 'Oakenshaw' correctly?

I walked through an oakenshaw. The oakenshaw is tall. We visited the Oakenshaw estate. He is very oakenshaw.

50. What part of speech is the word 'oafishly'?

Noun Adjective Adverb Verb