Words that start with O
5,843 words in our dictionary begin with the letter O. Pick a word length below to see the full list for that length, or start with the most common O words.
Most common words that start with O
Ranked by how often they appear in written English.
- of
- on
- or
- our
- one
- other
- out
- only
- over
- order
- off
- office
- open
- own
- old
- offers
- options
- offer
- original
- once
- others
- official
- often
- oil
Highest-scoring words that start with O
Standard Scrabble tile values, before any board multipliers.
- overcommercializations 42
- oxyphenbutazones 42
- overcommercialization 41
- oxyphenbutazone 41
- overcommercializing 40
- overcommercialized 39
- overcommercializes 38
- overintellectualizations 38
- overcommercialize 37
- overintellectualization 37
- overintellectualizing 36
- overcapitalizations 35
- overemphasizing 35
- overhomogenizing 35
- overintellectualized 35
- overspecializations 35
- ophthalmologically 34
- overcapitalization 34
- overemphasized 34
- overhomogenized 34
- overintellectualizes 34
- overspecialization 34
- overcapitalizing 33
- overcentralizations 33
By word length
| Length | Words | |
|---|---|---|
| 2 letters | 12 | Too few for a page |
| 3 letters | 45 | See the list |
| 4 letters | 107 | See the list |
| 5 letters | 181 | See the list |
| 6 letters | 325 | See the list |
| 7 letters | 618 | See the list |
| 8 letters | 972 | See the list |
| 9 letters | 922 | See the list |
| 10 letters | 791 | Too few for a page |
| 11 letters | 591 | Too few for a page |
| 12 letters | 419 | Too few for a page |
| 13 letters | 305 | Too few for a page |
| 14 letters | 215 | Too few for a page |
| 15 letters | 340 | Too few for a page |
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Common questions
How many English words start with O?
5,843 words in our dictionary begin with O, across every word length from two letters upwards. The breakdown by length is on this page.
What are the most common words that start with O?
Ranked by how often they appear in written English, the most common are: of, on, or, our, one, other, out, only. The full "most common" list is near the top of this page.
What is the highest-scoring word starting with O in Scrabble?
overcommercializations scores 42 points on plain tiles, before any double- or triple-word squares. Premium squares and the 50-point bingo bonus can change the ranking completely.
Are proper nouns and abbreviations included?
No. The list only contains words from the ENABLE lexicon, which excludes proper nouns, abbreviations and hyphenated forms — the same rule tournament Scrabble and most word games follow. Read more on the methodology page.
Counted from a 172,749-word public-domain lexicon, last reviewed 2026-08-01. How this list was built.