Four-letter words ending in O
130 four-letter words end with the letter O. Here is the full list, grouped by first letter — handy when a crossword gives you the last square and nothing else.
Most common four-letter words ending in O
Ranked by how often they appear in written English.
- also
- into
- info
- auto
- logo
- zero
- onto
- euro
- demo
- echo
- solo
- hero
- unto
- mono
- ciao
- polo
- expo
- trio
- memo
- alto
- undo
- halo
- keno
- peso
Highest-scoring four-letter words ending in O
Standard Scrabble tile values, before any board multipliers.
- bozo 15
- mozo 15
- expo 13
- mojo 13
- orzo 13
- ouzo 13
- zero 13
- dojo 12
- hypo 12
- judo 12
- jato 11
- jiao 11
- kayo 11
- kobo 10
- mako 10
- boyo 9
- chao 9
- coho 9
- echo 9
- fico 9
- hobo 9
- homo 9
- kudo 9
- mayo 9
All 130 four-letter words ending in O
A 9
- aero
- agio
- also
- alto
- ambo
- ammo
- arco
- arvo
- auto
B 6
- bolo
- boyo
- bozo
- brio
- broo
- bubo
C 7
- calo
- capo
- cero
- chao
- ciao
- coco
- coho
D 8
- dado
- dato
- deco
- demo
- dido
- dodo
- dojo
- duro
E 5
- echo
- eddo
- ergo
- euro
- expo
F 7
- fado
- fano
- faro
- fico
- fido
- filo
- fino
G 4
- giro
- gobo
- gogo
- gyro
H 6
- halo
- helo
- hero
- hobo
- homo
- hypo
I 3
- info
- inro
- into
J 3
- jato
- jiao
- judo
K 9
- kayo
- keno
- keto
- kilo
- kino
- kobo
- kolo
- koto
- kudo
L 8
- leno
- levo
- lido
- limo
- lino
- lobo
- loco
- logo
M 10
- mako
- mano
- mayo
- memo
- meno
- milo
- miso
- mojo
- mono
- mozo
N 1
- nolo
O 7
- oleo
- olio
- onto
- ordo
- orzo
- otto
- ouzo
P 6
- pepo
- peso
- piso
- poco
- polo
- prao
R 4
- rato
- redo
- repo
- roto
S 8
- sago
- sego
- shmo
- shoo
- silo
- solo
- sumo
- sybo
T 10
- taco
- taro
- thio
- thro
- tiro
- toro
- toyo
- trio
- typo
- tyro
U 5
- umbo
- unco
- undo
- unto
- updo
V 2
- veto
- vino
W 1
- wino
Z 1
- zero
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Common questions
How many four-letter words end in O?
There are 130 four-letter words ending in O, all listed on this page in alphabetical order.
What are the most common four-letter words ending in O?
Ranked by how often they appear in written English, the most common are: also, into, info, auto, logo, zero, onto, euro. The full "most common" list is near the top of this page.
What is the highest-scoring four-letter word ending in O in Scrabble?
bozo scores 15 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.