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 Oe

No Words Found

We couldn't find any words starting with "O" for the combination "Oe" 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 an 'oaklet'?

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

2. 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

3. Which mythological creature is the word 'oaf' etymologically related to?

Dragons Trolls Elves Giants

4. 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.

5. Which preposition correctly completes: 'The library is organized ___ genre.'

on at by with

6. What does oakmoss typically smell like?

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

7. Which sentence uses 'opportunity' correctly?

I have an opportunity for working. I have an opportunity to work. I have an opportunity of working. I have an opportunity working.

8. Which of the following is an antonym for 'oafdom'?

Stupidity Awkwardness Grace Ineptitude

9. Which sentence uses 'offer' correctly as a verb?

I offered to helping him. I offered him to help. I offered about helping. I offered to help him.

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

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

11. 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)

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

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

13. What is the opposite of 'oaklike' in terms of material strength?

Sturdy Hard Flimsy Durable

14. What part of speech is the word 'opportunity'?

Verb Adjective Noun Adverb

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

Oafish Oaf Oafishly Oafishness

16. What does the idiom 'window of opportunity' mean?

A glass door in an office A brief interval of time during which an opportunity exists A chance to look out a window A missed opportunity

17. How many syllables does 'oaken' have?

One Two Three Four

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

One Two Three Four

19. Which of the following is a grammatical rule for 'Oakenshaw'?

It must be lowercase. It takes the article 'the'. It is always capitalized. It can be used as a verb.

20. What is the common name for plants formerly called Oakesia?

Sunflowers Ferns Oak trees Monkeyflowers

21. What is the correct plural form of 'oaf'?

Oaves Oafs Oaves Oafen

22. What is the origin of the word 'opportunity'?

Greek 'optikon' (vision) Latin 'opportunus' (toward the port) French 'opportun' (timely) Old English 'opnung' (opening)

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

Noun Adjective Adverb Verb

24. What does the name 'Oakland' literally mean?

Land of lakes Land of oak trees Land of gold Land of the setting sun

25. How is oakmoss primarily used commercially?

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

26. Which city is located directly across the bay from Oakland?

San Jose Sacramento San Francisco Los Angeles

27. 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.

28. Which sentence uses 'oaken' correctly?

The oaken is heavy. He bought an oaken table. She oaken the door. It is made of oaken.

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

Off Cough Loaf Oven

30. 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

31. How should 'Oakesia' be formatted in scientific writing?

All caps In quotes Lowercase and bold Capitalized and italicized

32. Which word sounds exactly like 'Oakland' but refers to a city in New Zealand?

Oakhaven Auckland Oklahoma Ostend

33. Can a piece of land be 'very oadal'?

Yes, to show extreme ownership No, it is an absolute legal status Only in Scotland Only if it is large

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

Adjective Verb Abstract Noun Adverb

35. Which of the following is the correct adjective form of 'oaf'?

Oafy Oafish Oafly Oafic

36. What is the opposite of an oaklet?

A sapling An acorn A giant ancient oak A pine tree

37. What is the difference between 'opportunity' and 'chance'?

They mean exactly the same thing. Opportunity implies randomness; chance implies a favorable circumstance. Opportunity implies a favorable circumstance to be acted upon; chance often implies randomness or risk. Opportunity is only for jobs; chance is for weather.

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

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

39. What is an 'oakling'?

An acorn A mature oak tree A young oak tree A type of oak leaf disease

40. What part(s) of speech can the word 'offer' be?

Noun only Verb only Noun and Verb Adjective only

41. What is a common spelling mistake when pluralizing 'oaf'?

Spelling it 'oaves' Spelling it 'oafs' Spelling it 'oaffs' Spelling it 'oaps'

42. How is the word 'organize' pronounced in American English?

or-GAN-ize or-gan-IZE OR-guh-nize (stress first syllable) or-JAN-ize

43. Why shouldn't you eat a raw green oakberry?

It is highly toxic It is too bitter due to tannins It will make you fly It is too spicy

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

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

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

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

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

Allodial Feudal Leasehold Sectional

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

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

48. 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.

49. What part of speech is 'oad'?

Noun Verb Adjective Adverb

50. Can you say 'He has two oafdoms'?

Yes, it is plural. No, oafdom is an uncountable noun and has no plural form. Yes, but only in British English. No, because it is a verb.