Four-letter words starting with O
107 four-letter words begin with the letter O. The complete list is below in alphabetical order, grouped by second letter so you can scan straight to the ones that fit your puzzle.
Most common four-letter words starting with O
Ranked by how often they appear in written English.
- only
- over
- open
- once
- oral
- ones
- onto
- okay
- orgy
- odds
- oven
- oils
- oops
- oval
- owns
- oaks
- ours
- outs
- olds
- odor
- otto
- obey
- oath
- offs
Highest-scoring four-letter words starting with O
Standard Scrabble tile values, before any board multipliers.
- oozy 16
- oyez 16
- onyx 14
- oryx 14
- ooze 13
- orzo 13
- ouzo 13
- oxim 13
- oxid 12
- okay 11
- okeh 11
- oxen 11
- oxes 11
- ofay 10
- offs 10
- obey 9
- ohms 9
- opah 9
- orby 9
- ouch 9
- ouph 9
- ovum 9
- oaks 8
- odyl 8
All 107 four-letter words starting with O
OA 6
- oafs
- oaks
- oars
- oast
- oath
- oats
OB 7
- obes
- obey
- obia
- obis
- obit
- oboe
- obol
OC 1
- ocas
OD 6
- odds
- odea
- odes
- odic
- odor
- odyl
OF 2
- ofay
- offs
OG 4
- ogam
- ogee
- ogle
- ogre
OH 3
- ohed
- ohia
- ohms
OI 3
- oils
- oily
- oink
OK 5
- okas
- okay
- okeh
- okes
- okra
OL 7
- olds
- oldy
- olea
- oleo
- oles
- olio
- olla
OM 3
- omen
- omer
- omit
ON 6
- once
- ones
- only
- onto
- onus
- onyx
OO 5
- oohs
- oops
- oots
- ooze
- oozy
OP 7
- opah
- opal
- oped
- open
- opes
- opts
- opus
OR 14
- orad
- oral
- orbs
- orby
- orca
- orcs
- ordo
- ores
- orgy
- orle
- orra
- orts
- oryx
- orzo
OS 3
- osar
- oses
- ossa
OT 2
- otic
- otto
OU 7
- ouch
- ouds
- ouph
- ours
- oust
- outs
- ouzo
OV 4
- oval
- oven
- over
- ovum
OW 5
- owed
- owes
- owls
- owns
- owse
OX 4
- oxen
- oxes
- oxid
- oxim
OY 3
- oyer
- oyes
- oyez
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Common questions
How many four-letter words start with O?
There are 107 four-letter words beginning with O, all listed on this page in alphabetical order.
What are the most common four-letter words starting with O?
Ranked by how often they appear in written English, the most common are: only, over, open, once, oral, ones, onto, okay. The full "most common" list is near the top of this page.
What is the highest-scoring four-letter word starting with O in Scrabble?
oozy scores 16 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.