Countable Nouns That Start with O and End with E
Explore 302 verified English countable nouns starting with O and ending with E, including Office, Objective, Outcome, Orange, Offense, Offensive and Outline. Sort these count nouns with singular and plural forms by word length for ESL grammar practice, determiner usage, and plural spelling below, or review singular and plural count rules in our noun grammar guide.
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Starts with OA
2 words oatcake
oasthouse
Starts with OB15 words
objective
obstacle
obedience
obsessive
observable
oblique
observance
oboe
obe
obeisance
obverse
oblate
obligee
obeche
obligative
Starts with OC17 words
occurrence
octave
octane
oceanside
octuple
occlusive
oche
octothorpe
occupance
octahedrite
octapeptide
octosyllable
octangle
octuplicate
octastyle
octostyle
ochidore
Starts with OD7 words
ode
odalisque
odonate
odontocete
odontolite
odontophore
odorophore
Starts with OE4 words
oeuvre
oenophile
oe
oeillade
Starts with OF8 words
office
offense
offensive
offside
offtake
officemate
offeree
offie
Starts with OG4 words
ogre
ogle
ogee
ogive
Starts with OH
1 words ohmage
Starts with OI
2 words oilstone
oilhole
Starts with OJ
1 words ojime
Starts with OK3 words
okie
oke
okeydoke
Starts with OL17 words
olive
oldie
ollie
oligonucleotide
olivine
oligosaccharide
oligodendrocyte
oleomargarine
oligopeptide
oleate
oligoclase
oldwife
oligochaete
olpe
olivenite
oligogene
oligochrome
Starts with OM12 words
omnivore
ombre
omeprazole
omakase
ombrophile
omnirange
omphalocele
omittance
omphacite
omoplate
ommatophore
ombrophobe
Starts with ON8 words
one
onesie
onside
oncogene
ontake
oncomouse
oncome
onychite
Starts with OO8 words
ooze
oocyte
oolite
oosphere
oospore
oophyte
oomycete
oogamete
Starts with OP24 words
opposite
opaque
operative
opiate
opcode
ophthalmoscope
optative
opaline
openside
optionee
optime
ophiolite
opuscule
opaleye
ophidiophile
ophite
optimate
ophidiophobe
optophone
ophicleide
opercule
opepe
opisthopulmonate
opisthobranchiate
Starts with OR24 words
orange
ore
oracle
ordinance
orifice
orphanage
organelle
orangeade
ordinate
organophosphate
orecchiette
ordonnance
orthophosphate
orle
orfe
organochlorine
orthoclase
oriflamme
orache
ordinee
orthopyroxene
orpine
ortanique
orthosilicate
Starts with OS20 words
oscilloscope
osteocyte
ossicle
ostomate
osteophyte
oscine
ose
ostiole
ossifrage
oscule
osmate
ossature
osmole
osteotome
ossicone
oscitance
osmiate
oscinine
osteochondrophyte
ostreophage
Starts with OT3 words
otoscope
otarine
ottrelite
Starts with OU24 words
outside
outcome
outline
outrage
ounce
outage
outhouse
outtake
outperformance
outsize
outie
outsole
outdrive
oubliette
outcaste
outedge
outtrade
outstroke
ouvrage
outcurve
outmarriage
outquote
outgate
outguide
Starts with OV24 words
overtime
overdose
override
overture
overwrite
overdrive
overestimate
overtone
overcharge
oversize
overshare
overabundance
overexposure
overbite
overindulgence
overage
overbalance
ovine
overshoe
ovate
overpressure
overvoltage
overbridge
overdosage
Starts with OW
1 words owie
Starts with OX21 words
oxide
oxycodone
oxidase
oxalate
oxtongue
oxaloacetate
oxytetracycline
oxeye
oxygenase
oxime
oxidoreductase
oxazole
oxytone
oxyphile
oxazine
oxazolone
oxysome
oxysulfide
oxgate
oxyanthraquinone
oxytrope
Starts with OZ3 words
ozonide
ozonosphere
ozokerite