Words That Start With O
There are over 8.9K words that begin with O in English. From 2-letter words to 15-letter entries, find O-words grouped and sortable by length below, all valid in Scrabble, Wordle, and Words With Friends. You can also see five letter words starting with O.
2-Letter Words Starting With O
Short high-frequency O-words:of
on
or
ob
od
oe
oh
oi
ok
om
oo
op
os
ou
ow
ox
oy
3-Letter Words Starting With O
Short high-frequency O-words:one
out
own
off
old
our
oil
odd
ore
oak
oat
oba
obo
ohs
oke
oma
oom
oor
orc
owe
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4-Letter Words Starting With O
Common 4-letter O-words:only
over
once
open
ones
onto
oral
otto
odds
oath
owns
owed
oils
obey
odyl
offs
oofy
ords
oyer
oyez
5-Letter Words Starting With O
Common 5-letter O-words:other
often
order
occur
older
offer
owned
opera
orbit
outer
ocean
owner
organ
oxide
opens
owing
onset
ought
ozone
opium
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6-Letter Words Starting With O
Common 6-letter O-words:others
office
object
opened
occurs
output
origin
orders
offers
oxygen
oldest
online
obtain
oxford
option
owners
organs
orange
openly
operas
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7-Letter Words Starting With O
Common 7-letter O-words:outside
objects
offered
ordered
opening
overall
opposed
operate
officer
opinion
offices
optical
organic
origins
obvious
ongoing
options
olympic
outcome
orbital
8-Letter Words Starting With O
Common 8-letter O-words:original
official
observed
occurred
officers
obtained
opposite
operated
ordinary
offering
occupied
operator
operates
occasion
opponent
opposing
overcome
overseas
opinions
observer
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9-Letter Words Starting With O
Common 9-letter O-words:operating
operation
officials
otherwise
organized
organisms
objective
opponents
ownership
offensive
operators
occasions
occurring
orchestra
offspring
observers
organised
oxidation
observing
obtaining
10-Letter Words Starting With O
Common 10-letter O-words:originally
operations
opposition
officially
originated
occupation
occasional
objectives
occurrence
obligation
orchestral
organizing
oscillator
objections
observable
originates
orthodoxly
outbluster
outsources
oversights
11-Letter Words Starting With O
Common 11-letter O-words:opportunity
operational
observation
orientation
outstanding
obligations
originating
overlapping
obviousness
octonarians
offensively
oncogenesis
orepearches
outpreaches
overdirects
overflowing
overgrained
overhandles
overletting
overpedaled
12-Letter Words Starting With O
Common 12-letter O-words:organization
occasionally
observations
organisation
overwhelming
optimization
oligophagies
organistrums
orthodontist
orthodromies
osmolarities
outbuildings
overcanopies
overeducated
overengineer
overfreedoms
overgraining
overmastered
overwatching
overwrestles
13-Letter Words Starting With O
Common 13-letter O-words:organizations
opportunities
organisations
obstructively
omnipresences
omoplatoscopy
onomatopoeias
ophiophilists
opportunistic
orthodiagonal
overabundance
overadvertize
overanalysing
overeducating
overexercised
overorganised
overpreparing
overprogramed
oversecretion
ovoviviparous
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14-Letter Words Starting With O
Common 14-letter O-words:organizational
obligatoriness
occidentalized
octodecillions
opsonification
orchidologists
organisability
orobanchaceous
orthopinakoids
osteodermatous
overadvertises
overcentralise
overdecoration
overdocumented
overdramatizes
overidealizing
overornamented
overpersuasion
overpoweringly
overspecialize
15-Letter Words Starting With O
Common 15-letter O-words:obliviousnesses
offhandednesses
oligomerization
omnisexualities
ophthalmoscopes
ophthalmoscopic
opisthognathism
opprobriousness
optoelectronics
organochlorines
osteopathically
otherworldliest
overcapitalizes
overcommunicate
overcompliances
overcomplicated
overcultivation
overembellishes
overemployments
overpreparation
8,937 Common Words Starting with O
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What is the highest scoring word in
Scrabble that starts with O?
The highest scoring word in Scrabble that starts with O is oxyphenbutazone with a total of 41 points.
Words that begin with O are commonly used for word games like Scrabble and Words with Friends. This list will help you to find the top scoring words to beat the opponent. You can also find a list of all words that end in O and words with O. Try our five letter words starting with O page if you’re playing Wordle-like games or use the New York Times Wordle Solver for finding the NYT Wordle daily answer.
FAQ Words That Start With O
How many words starting with O are in the English dictionary?
There are 8,937 words in the English dictionary that start with O, and most of them are 9 letters long (1,447 words of that length).
What's the longest word starting with O?
The longest word starting with O is "osteopathically" at 15 letters long. If you're looking for a more everyday word, "organizational" is the longest common word starting with O.
Are there any rare words starting with O worth more in Scrabble?
Yes. Uncommon words like "oxyphenbutazone", "objectivize", "oxidization", "oxidizable" start with O and can score big thanks to their unusual letters. "oxyphenbutazone" is worth 41 points in Scrabble before any bonus tiles.
What are the most common words starting with O?
Most words starting with O are 9 letters long, including everyday words like "operating", "operation", "officials", "otherwise", "organized".
Next to Words Start With O
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