Countable Nouns Starting with O and Containing OB

Explore 143 verified English countable nouns starting with O and containing OB, 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 OC
2 words
ochlophobic
ochlophobiac
Starts with OD
2 words
odontoblast
odontophobia
Starts with OL
1 words
olfactophobia
Starts with OM
1 words
ombrophobe
Starts with OO
1 words
oobit
Starts with OP7 words
ophidiophobia
ophidiophobic
ophidiophobe
opisthobranch
opobalsam
opisthobranchiate
ophthalmophobia
Starts with OR5 words
oroblanco
ornithophobia
ornithobiography
orthoborate
orthobenzoquinone
Starts with OS4 words
ossobuco
osteoblast
osmophobia
osmophobic
Starts with OU
1 words
ouroboros
Starts with OV
1 words
overobjectification

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