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 Oad, Oadal, Oaf. 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

All Words Starting With O

Oad Adjective Oadal Adjective Oaf Noun Oafdom Noun Oafish Adjective Oafishly Adverb Oafishness Noun Oafs Noun Oak Noun Oakberry Noun Oakboy Noun Oaken Adjective Oakenshaw Proper Noun Oakesia Noun Oakland Proper Noun Oaklet Noun Oaklike Adjective Oakling Noun Oakmoss Noun Observe Verb Offer Noun, Verb Open Adjective, Verb Opportunity Noun Organize Verb

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 does the word 'oaf' mean?

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

2. Which sentence uses 'oafdom' correctly?

He oafdomed his way down the hall. She is very oafdom. He apologized for his sudden descent into oafdom. The oafdom tree lost its leaves.

3. What part of speech is 'oakmoss'?

Noun Verb Adverb Preposition

4. What does the plural noun 'oafs' refer to?

Large farm animals Clumsy, awkward, or stupid men Magical forest creatures Expensive leather shoes

5. 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

6. What does the dialectal word 'oad' mean?

Old Odd A road A heavy load

7. Which of the following is a common mistake when using the word 'oakboy'?

Using it for a pine tree Using it as a noun Pluralizing it Stressing the first syllable

8. What part of speech is 'oaken'?

Noun Verb Adjective Adverb

9. Why is 'Oakesia' no longer used in modern botany?

The plants are extinct It was a hoax It is now classified under Erythranthe It was renamed after a bird

10. Which suffix in 'oaklet' indicates smallness?

-oak -et -let -oakl

11. What does the phrase 'heart of oak' symbolize?

Sickness Great strength and courage Softness and flexibility Bad temper

12. How is 'Oakland' pronounced in American English?

oak-LAND OAK-lnd OH-kah-land uhk-LAHND

13. Why should you avoid using 'oafishness' for someone with a motor disability?

It is a medical term. It is an insulting term for bad behavior, not a medical description. It only applies to animals. It is too formal.

14. Who is the genus 'Oakesia' named after?

An oak tree A Greek god William Oakes Oakes Ames

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

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

16. Which sentence uses 'oafish' correctly?

He oafished the ball. The oafish man knocked over the vase. She is an oafish. The oafish quickly ran away.

17. How many syllables are in the word 'oafish'?

One Two Three Four

18. Which suffix in 'oakling' indicates that it is small or young?

-ing oak- -ling -le

19. What does it mean to have 'oaken strength'?

To be weak To be flexible To be extremely strong To be light

20. How is 'oakmoss' treated grammatically?

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

21. If you want to describe *how* someone walked, which word should you use?

Oafish Oaf Oafishly Oafishness

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

Awkward Graceful Stupid Uncouth

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

Offer weather Job offer Offer metal Offer speed

24. What is an 'oaklet'?

A type of acorn A small or young oak tree A piece of oak wood A disease affecting oaks

25. What is the difference between 'oafish' and 'boorish'?

Oafish means rude; boorish means clumsy. Oafish implies clumsiness and stupidity; boorish implies rudeness. They mean exactly the same thing. Oafish is a compliment; boorish is an insult.

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

Offering Offerer Offer Offered

27. Because 'Oakland' is a proper noun, how should it be written?

In italics All lowercase Capitalized In quotes

28. What does oakmoss typically smell like?

A damp forest floor Fresh citrus Vanilla and sugar Saltwater and breeze

29. Which sentence is grammatically correct regarding the double-object structure?

She offered to him a drink. She offered a drink him. She offered him a drink. She offered for him a drink.

30. Which word does 'oaf' rhyme with perfectly?

Off Cough Loaf Oven

31. Which word is the best synonym for 'oaklet'?

Sapling Lumber Root Canopy

32. Where does oakmoss primarily grow?

On rocks in the desert On the bark of oak trees In shallow ponds On the forest floor

33. What is the correct pronunciation of 'oafishness'?

ah-FISH-ness OH-fish-ness oh-FISH-ness AFF-ish-ness

34. In which syllable is the primary stress placed when pronouncing 'oaklike'?

First (OAK) Second (lyk) Neither Both equally

35. Which word is the closest everyday synonym for 'oafdom'?

Clumsiness Brilliance Boredom Elegance

36. What language did the roots of 'Oakenshaw' originate from?

Latin French Old English Greek

37. What is a common modern mistake when people see the word 'oad'?

Thinking it means 'new'. Thinking it is a typo for 'odd' or 'ode'. Pronouncing it 'o-a-d'. Using it as a verb.

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

at on for to

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

Oakish Oaky Oaken Oakful

40. Why did writers historically use the spelling 'oad'?

It was a typo. To reflect regional accents that dropped the 'l'. To make words longer. It was a royal decree.

41. How is the word 'oak' pronounced?

AHK (one syllable) OH-kuh (two syllables) OHK (one syllable) OR (one syllable)

42. Which sentence uses 'organize' correctly?

We organized for cleaning the park. We organized to clean the park. We organized on cleaning the park. We organized cleaning to the park.

43. What is a synonym for the figurative use of 'oaken'?

Flimsy Fragile Unyielding Delicate

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

Arrange Sort Disorganize Systematize

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

Copse Meadow Thicket Grove

46. Which part of speech is the word 'oafdom'?

Adjective Verb Abstract Noun Adverb

47. Which mythical creature is the female Greek equivalent to an oakboy?

A nymph A dryad A satyr A centaur

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

Noun Adjective Adverb Verb

49. Is it correct to say 'The table is made of oaken'?

Yes, always No, you should say 'an oaken table' Only in the UK Only in the past tense

50. What part of speech is 'Oakenshaw'?

Common Noun Verb Proper Noun Adjective