Countable Nouns Starting with O and Containing LO

Browse 82 valid English countable nouns starting with O and containing LO, from Outlook, Overlook, Overflow, Overload, Ontology, Outflow and Onlooker to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with OA
1 words
oarlock
Starts with OB3 words
oblong
obloquy
oblongata
Starts with OC9 words
ocelot
oculomotor
ocotillo
ochlocracy
octoploid
oceanologist
ochlophobic
ochlocrat
ochlophobiac
Starts with OD3 words
odontologist
odonatologist
odontoglossum
Starts with OE
1 words
oenologist
Starts with OF
1 words
offload
Starts with OI
1 words
oilcloth
Starts with OL6 words
ology
ologist
oloroso
ololiuqui
olfactologist
ologoan
Starts with OM3 words
omphalos
omphalocele
omphalodes
Starts with ON6 words
ontology
onlooker
oncologist
ontologist
onflow
onomatologist
Starts with OO
2 words
oolong
oologist
Starts with OP4 words
ophthalmologist
ophiologist
ophthalmencephalon
optologist
Starts with OR10 words
ornithologist
orlop
organochlorine
orchidologist
organologist
orillon
orologist
orthopterologist
oreologist
orchiencephaloma
Starts with OS7 words
oscilloscope
oscillograph
osteologist
oscillogram
osteoglossum
osteoglossid
osteoencephaloma
Starts with OT
2 words
otorhinolaryngologist
otologist
Starts with OU3 words
outlook
outflow
outlodging
Starts with OV16 words
overlook
overflow
overload
overlord
overclock
overdevelopment
overexploitation
overlock
overclocker
overlooker
ovolo
overblouse
overflood
overcolor
overscrupulosity
overflourish
Starts with OW
1 words
owerloup
Starts with OX3 words
oxblood
oxaloacetate
oxazolone

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