Countable Nouns Starting with O and Containing B

Explore 223 verified English countable nouns starting with O and containing B, including Object, Objective, Observation, Obligation, Obstacle, Objection and Observer. 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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Starts with OB24 words
object
objective
observation
obligation
obstacle
objection
observer
obsession
obedience
obstruction
obsessive
obscurity
observable
obituary
oblique
observance
observatory
obscenity
obsidian
oboe
objector
oblong
objectification
obliteration
Starts with OC4 words
octosyllabic
octosyllable
ochlophobic
ochlophobiac
Starts with OD3 words
oddball
odontoblast
odontophobia
Starts with OF
2 words
offbeat
offbreak
Starts with OI
1 words
oilbird
Starts with OL
2 words
olallieberry
olfactophobia
Starts with OM11 words
ombudsman
omnibus
ombre
ombudsperson
ombuds
omnishambles
ombrophile
omusubi
ombu
ombrometer
ombrophobe
Starts with ON
2 words
onboarding
onbeat
Starts with OO
1 words
oobit
Starts with OP8 words
ophidiophobia
ophidiophobic
ophidiophobe
opisthobranch
opobalsam
opisthobranchiate
ophthalmophobia
ophthalmophlebotomy
Starts with OR16 words
orbit
orb
orbital
orbiter
orbicularis
orebody
oroblanco
oribi
orbita
ornithophobia
oribatid
orbity
orbitosphenoid
ornithobiography
orthoborate
orthobenzoquinone
Starts with OS6 words
ossobuco
osteoblast
osmophobia
osnaburg
osmophobic
osteochondrofibroma
Starts with OU14 words
outbreak
outburst
outback
outboard
outbuilding
outbox
ouroboros
oubliette
ouabain
outbacker
oubaas
oubit
outbidder
outharbor
Starts with OV24 words
overabundance
overbite
overburden
overbooking
overbalance
overbid
overdub
oversubscription
overbridge
overbet
overcontribution
overelaboration
overburn
ovenbird
ovalbumin
overboot
overexcitability
overbank
overblouse
overabstraction
overbidder
overblanket
overstability
ovibos
Starts with OX3 words
oxbow
oxblood
oxylabrax

•Browse Countable Nouns by Letter (A to Z)

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