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 Om

No Words Found

We couldn't find any words starting with "O" for the combination "Om" 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 part of speech is the word 'oadal'?

Noun Verb Adjective Adverb

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

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

3. 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

4. What part of speech is the word 'organize'?

Noun Adjective Verb Adverb

5. What is the noun form of 'observe' meaning 'the act of watching'?

Observer Observance Observation Observing

6. How is oakmoss primarily used commercially?

As a food thickener In perfumery as a base note For building insulation As a textile dye

7. Which word is an antonym for 'organize'?

Arrange Sort Disorganize Systematize

8. How is the word 'opportunity' pronounced in American English?

ah-POR-too-nuh-tee ah-per-TOO-nuh-tee ah-per-too-NUH-tee OP-er-too-nuh-tee

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

Elegance Boorishness Clumsiness Finesse

10. Which of the following is the correct way to make an electrical device work?

Open the TV Open the light Turn on the computer Open the radio

11. How is the word 'oaklet' correctly pronounced?

OAK-lit oak-LET AHK-lay OAK-uh-let

12. What part of speech is 'oakberry'?

Verb Noun Adjective Adverb

13. Which sentence uses 'oafs' correctly?

He is oafs. They are a bunch of oafs. Stop oafsing around. She is an oafs.

14. Where is the primary stress in the pronunciation of 'oafdom'?

First syllable (OHF-duhm) Second syllable (oaf-DUHM) Both syllables equally Neither syllable

15. Why should you not use 'oafishly' to describe intentional destruction?

It is a bad word. It implies accidental clumsiness. It is too formal. It only applies to speech.

16. What is the root noun from which 'oafishly' is derived?

Oaf Oafish Oafness Oafism

17. 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

18. Which preposition correctly completes: 'The company made an offer ___ the startup.'

at on for to

19. 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.

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

Noun Adjective Adverb Verb

21. Which word is an antonym for 'observe' when used to mean following a rule?

Comply Follow Violate Respect

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

An ogre An elf or fairy A bear A giant

23. Which word is an antonym for 'opportunity'?

Chance Prospect Setback Opening

24. Which of the following is an antonym concept to 'Oakenshaw'?

Copse Meadow Thicket Grove

25. What does the noun 'oafishness' primarily describe?

Intentional cruelty Clumsiness and lack of social grace High intelligence Physical strength

26. In a botanical context, what might be described as 'oaklike'?

A pinecone A leaf with deep lobes A smooth, peeling birch trunk A pine needle

27. In historical contexts, what was the purpose of an oakboy gathering acorns?

To plant new forests To make flour To feed pigs (pannage) To sell to merchants

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

Awkward Graceful Stupid Uncouth

29. Which of the following is a major economic feature of Oakland?

The Hollywood film studios The Port of Oakland The Las Vegas strip The Silicon Valley tech campus

30. What does 'oaklike' mean?

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

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

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

32. Which of the following is a popular, affectionate nickname for Oakland?

Oaktown Oak City Oakville Oakwood

33. What is the standard modern English spelling of 'oad'?

Auld Old Odd Ode

34. What does the suffix '-dom' in 'oafdom' signify?

A quality or characteristic A state, condition, or realm A person who does something A small version of something

35. What is the difference between an 'acorn' and an 'oakling'?

They are the same thing An acorn is the seed; an oakling is the young tree An oakling is the seed; an acorn is the tree An acorn is a type of oakling

36. What part of speech is 'oad'?

Noun Verb Adjective Adverb

37. Which sentence uses 'oafishness' correctly?

He oafishnessed the door. That was an oafishness joke. We laughed at his sheer oafishness. He is very oafishness.

38. Which sentence uses 'open' correctly to describe a state?

The store is opened. The store is open. The store is opening. The store opens.

39. Which part of speech is 'oaklike'?

Noun Verb Adjective Adverb

40. 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

41. Which ancient legal system is the word 'oadal' derived from?

Roman Law Old Norse Law Napoleonic Code English Common Law

42. What do you call a person who lives in Oakland?

Oakish Oaklander Oaklanderite Oakie

43. Which word shares the same diminutive suffix as 'oakling'?

Oak Tree Duckling Forest

44. In what context is the word 'oaklet' most likely to be used?

Scientific botany reports Casual conversation about cars Poetry and descriptive literature Cooking recipes

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

Acorn Pinecone Chestnut Walnut

46. What kind of olfactory note does oakmoss provide?

Light floral top note Sweet fruity middle note Deep earthy base note Sharp citrus top note

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

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

48. How do you correctly pluralize the Oakenshaw family?

The Oakenshaw's The Oakenshaws The Oakenshawes The Oakenshaw

49. What is the noun form of 'offer' meaning 'a thing presented for acceptance'?

Offering Offerer Offer Offered

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

First Second Third Fourth