Countable Nouns Starting with O and Containing E

Explore 1,083 verified English countable nouns starting with O and containing E, including Open, Order, Office, Offer, Operation, Object and Owner. Browse these count nouns with singular and plural forms below, or review singular and plural count rules in our noun grammar guide.

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oatmeal
oater
oatcake
oakleaf
oasthouse
oarweed
object
objective
observation
obstacle
objection
observer
obsession
obedience
obsessive
observable
oblique
observance
observatory
obscenity
oboe
objector
objectification
obliteration
obstetrician
obe
obelisk
observability
obeisance
obverse
ocean
occurrence
octave
octane
oceanfront
oceanside
occupier
octet
octogenarian
ocelot
oceanview
occidental
ocher
octahedron
oceanographer
octuple
occlusive
occluder
octuplet
oche
octocopter
occidentalism
octothorpe
occidentalist
odyssey
ode
oddness
odeon
oddsmaker
oddment
odalisque
odeum
odonate
odontocete
odorizer
odesan
odontolite
odontophore
odontornithes
odorophore
odontopteryx
oeuvre
oenophile
oersted
oerlikon
oe
oenologist
oedometer
oenothera
oeillade
oenophilist
oenomel
oecist
oenometer
office
offer
officer
offense
offensive
offering
offset
offender
offseason
offside
officeholder
offbeat
offertory
offeror
offtake
officemate
offeree
offerer
offie
offspinner
offsider
offhandedness
offcutter
offbreak
ogre
ogle
ogee
ogive
ogress
ogler
ogonek
ogrefish
Starts with OH
2 words
ohmmeter
ohmage
ointment
oiler
oilfield
oilseed
oilstone
oilpaper
oilhole
oilery
oillet
Starts with OJ
1 words
ojime
okie
oke
okeydoke
oliver
olive
oldie
ollie
oleander
oldster
oleo
oligonucleotide
oligomer
olefin
olivine
oligosaccharide
oligodendrocyte
oligomerization
olea
olecranon
oleomargarine
oligodendroglioma
oligopeptide
olein
oleate
oleoresin
oleochemical
oleaster
omen
omega
omelet
omnipotent
omnivore
omniscient
ombre
omeprazole
ombudsperson
omakase
omentum
omer
omnisexual
omnishambles
ombrophile
omnirange
omphalocele
ombrometer
omittance
omphalodes
omitter
omphacite
ommateum
omoplate
one
onset
onlooker
onesie
onomatopoeia
onside
oncogene
onliner
ontogeny
oncer
onager
oner
onbeat
onglet
onomatopoiesis
ontake
oncogen
oncomouse
oneirocritic
oneiromancer
oneyer
oncome
onsetter
oneirocritics
ooze
oodles
oocyte
oolite
oophorectomy
ootheca
oosphere
oospore
oophorosalpingectomy
oophyte
oomycete
oosperm
oophorhysterectomy
oophorocystectomy
oogamete
open
operation
opening
opposite
opponent
operator
opera
oppression
opaque
opener
operative
opiate
oppressor
optimizer
optometrist
operetta
operand
opposer
operant
opcode
opencast
ophthalmoscope
optative
operon
order
orange
orientation
organizer
orchestra
orderly
ore
oracle
ornament
orient
oriental
ordeal
ornamental
ordinance
orchestration
orifice
orphanage
oregano
ornamentation
orbiter
orchestrator
orientalism
organelle
orangeade
osprey
ostentation
oscilloscope
osteopathy
osteopath
ostler
osteosarcoma
osteoid
osteria
osteonecrosis
osteocyte
osteomyelitis
ossicle
osteotomy
osier
ostomate
osetra
osteoblast
osteoarthritic
osteoclast
osteoarthrosis
osteoma
osteophyte
osteopetrosis
other
otter
othering
otherworld
otoscope
otarine
otterhound
otosclerotic
ottrelite
outside
outcome
outer
outline
outlet
outrage
ounce
outsider
outreach
outbreak
outage
outset
outpatient
outlier
ouster
outfield
outfielder
outlander
outfitter
outhouse
outtake
outrigger
outperformance
outstretch
over
overall
overnight
overview
overlook
overhead
oversight
overtime
overdose
override
overlap
overflow
overthrow
overturn
overload
overlay
overhaul
overture
overrun
overalls
overhang
overseer
overcast
overcoat
owner
ownership
owens
owie
owlet
owlery
ower
owler
owelty
owerloup
oxide
oxycodone
oximeter
oxidizer
oxidase
oxalate
oxazepam
oxygenator
oxheart
oxtongue
oxaloacetate
oxytetracycline
oxeye
oxter
oxygenase
oxer
oxime
oxidoreductase
oxazole
oxhead
oxherd
oxpecker
oxytone
oxymel
oyster
oyez
oystercatcher
oyer
oysterman
oysterer
ozeki
ozonide
ozonizer
ozonosphere
ozokerite

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