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 Oj

No Words Found

We couldn't find any words starting with "O" for the combination "Oj" 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. How is the word 'oafish' pronounced?

AH-fish oh-FISH OH-fish OO-fish

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

Latin French Old English Greek

3. How do you correctly pluralize the Oakenshaw family?

The Oakenshaw's The Oakenshaws The Oakenshawes The Oakenshaw

4. Which article should precede 'oakling'?

A An The No article

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

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

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

San Jose Sacramento San Francisco Los Angeles

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

on at by with

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

Noun Adjective Adverb Verb

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

Oakhaven Auckland Oklahoma Ostend

10. 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

11. How is the word 'open' pronounced in American English?

AH-pen (short a) oh-PEN (stress second syllable) OH-pen (long o, stress first syllable) OO-pen

12. Historically, the word 'oaf' was a variation of which word?

Ox Elf Wolf Bear

13. Which part of speech does 'oakboy' belong to?

Verb Adjective Noun Adverb

14. What part of speech is 'Oakesia'?

Verb Noun Adjective Adverb

15. 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.

16. What is the correct spelling of the word?

oak boy okeboy oakboy oakboi

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

Flimsy Fragile Unyielding Delicate

18. 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)

19. 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

20. Which part of speech is 'oaf'?

Verb Noun Adjective Adverb

21. 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

22. 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.

23. What does it mean if someone is acting 'oafish'?

They are being very graceful. They are being clumsy and socially awkward. They are being extremely rude on purpose. They are acting like a bird.

24. How is oakmoss primarily used commercially?

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

25. On which syllable is the primary stress placed?

The first syllable (OH) The second syllable (fish) The third syllable (lee) Equal stress on all

26. How is 'oaklike' typically spelled in modern English?

As two separate words With a hyphen (oak-like) As one word (oaklike) With an apostrophe

27. 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

28. 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.

29. 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.

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

Old Odd A road A heavy load

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

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

32. What is the plural of 'oakberry'?

Oakberrys Oakberries Oakberry Oakberi

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

Oakish Oaky Oaken Oakful

34. What is the correct preposition: 'I want to be open ___ you about my past.'

to with for on

35. How is the word 'offer' pronounced in American English?

oh-FUR AW-fur (rhyming with coffer) OFF-er (short o) oo-FER

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

Adjective Verb Abstract Noun Adverb

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

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

38. How is 'oad' pronounced?

Like 'odd' Like 'ah-d' Like 'oh-d' (rhyming with road) Like 'oo-ad'

39. Which part of speech is 'oaklike'?

Noun Verb Adjective Adverb

40. Which sentence uses 'Oakenshaw' correctly?

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

41. 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.

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

Dragons Trolls Elves Giants

43. Which of the following is the adjective form of 'oaf'?

Oafly Oafish Oafable Oaftic

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

Allodial Feudal Leasehold Sectional

45. How is the word 'oak' pronounced?

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

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

First Second Third Fourth

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

Oaves Oafs Oaves Oafen

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

Stupidity Awkwardness Grace Ineptitude

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

Sunflowers Ferns Oak trees Monkeyflowers

50. What is the plural form of 'oaklet'?

Oaklets Oaklet Oaklettes Oakli