Nouns That Start With O
Nouns that start with O are the basic vocabulary in English. Teaching the O nouns are the first stage in a kid’s learning. After the O vocabulary, children can begin learning comprehension.
What Are Nouns?
First, need to know what is a noun? Nouns are one of the nine parts of speech in English Grammar. Noun is a word used for the person, object, place, event, idea, substance, quality, and quantity. Nouns are the most common words used in English. I have enlisted an comprehensive collection of nouns that start with O.
Before teaching a kid how to read sentences, it is essential to make sure to know the O nouns vocabulary.
Also Read: 12 Verb Tenses Worksheets
Nouns That Start With O will encourage the kids to improve their reading ability of English.
Nouns That Start With O are for students at the preschool and kindergarten levels. Here is a range of the O nouns that will assist students. I hope this will help!
Nouns that start with O pages are a fantastic method to combine kids love of learning about the English. Here are some fantastic printable pages for nouns that start with O to assist your child in learning how to become master in vocabulary..
O noun lists can assist your kids in understanding the ways that other languages work. I hope, these free O noun collections will assist you in achieving your goals.
Read also Types of Sentences Worksheets and Parts of Speech Worksheets!
Nouns That Start With O List
Here are nouns that start with O in English that will encourage your English Vocabulary. You will get here 8 Letter nouns, 7 letter nouns, 6 letter nouns, 5 letter nouns, and 4 letter nouns!
ESLBlock offers free kindergarten worksheets, free preschool worksheets flashcards, and Online Quizzes.
It is a fact that there are too many lovely nouns that start with O in English; it is challenging to choose to include them in the index.
Oak | oralist | off-roader |
oba | orality | off-season |
obe | oration | offspinner |
obi | oratory | offworlder |
obs | orbital | Oilheating |
oby | orbiter | old-school |
oca | orchard | olsalazine |
oct | orderly | omeprazole |
oda | orebody | ommatidium |
ode | oregano | omnipotent |
Oep | Organdy | oncologist |
off | organon | oncostatin |
ogi | organum | onomastics |
ohm | organza | opaqueness |
oik | orifice | ophthalmia |
oil | origami | opposition |
oka | orogeny | oppression |
oke | orvieto | opprobrium |
ola | osmosis | oprichnina |
old | osmunda | optimality |
olf | ossuary | orang-utan |
Ome | osteoma | orangutang |
omi | ostiole | orcharding |
oni | ostmark | ordination |
Ooh | ostrich | organicism |
op. | otalgia | organicist |
orb | ottoman | organology |
orc | ouabain | orichalcum |
ord | ouguiya | originator |
ore | outback | ornamenter |
orf | outcast | ornateness |
org | outcome | orogenesis |
orl | outcrop | oropharynx |
ort | outfall | orotundity |
osh | outflow | orthoptera |
ost | outgate | oscillator |
oth | outhaul | osculation |
oul | outland | osmolality |
out | outline | osmolarity |
owl | outlook | osteolysis |
oxo | outport | osteopathy |
oxy | outpost | osteopenia |
oyl | outrage | ostranenie |
Oath | outseam | otherworld |
obex | outside | outfielder |
obit | outsole | outpatient |
oboe | outspan | outpouring |
obol | outturn | out-relief |
oche | outwash | outstation |
oden | outwork | outswinger |
odor | ouvrier | ovariotomy |
ogam | ovation | overbridge |
ogee | overall | overcharge |
oggy | overarm | overdosage |
ogle | overbar | overflight |
ogre | overdub | overgrowth |
Ohio | overlap | overhearer |
oink | Overlay | overlength |
ojha | overman | overlooker |
okay | overrun | overmantel |
okey | overuse | Overriding |
okra | oviduct | overstrike |
oleo | oxalate | oversupply |
olla | oxblood | overthrust |
omen | oxidant | Overweight |
omer | oxidase | ovipositor |
omul | obduracy | oxybutynin |
oner | obeyance | oxygenator |
only | obituary | ozonesonde |
onus | objector | obfuscation |
onyx | oblation | objectivism |
ooze | obligato | objectivist |
opah | obliquus | objectivity |
opal | oblivion | obliqueness |
open | observer | obscuration |
oper | obsidian | observation |
oppo | obstacle | observatory |
oppy | occasion | obstruction |
opry | occident | obviousness |
opus | occupant | occultation |
oral | occupier | octapeptide |
orca | octavius | officership |
orde | octofoil | officialdom |
ordo | octopole | officialese |
orfe | octopush | officialism |
orgy | Octoroon | off-licence |
oryx | odometer | off-license |
orzo | odontoid | off-worlder |
osha | oecology | omnipotence |
otto | oenology | omniscience |
outa | oestriol | oncogenesis |
ouzo | offender | oncoprotein |
oval | Offering | ondansetron |
oven | Offersey | oneiromancy |
over | official | one-nighter |
ovum | offshoot | onerousness |
ower | oilcloth | onomatopeia |
owre | oilfield | ontogenesis |
Oxen | oiliness | opalescence |
oxer | oilstone | operability |
oxon | ointment | oppertunity |
oyer | oiticica | opportunism |
Oasis | oldstyle | opportunist |
Oathe | oleander | opportunity |
obeah | oligarch | optionality |
ocean | oligomer | optocoupler |
Ocher | oliguria | optometrist |
ochre | oliphant | orchestrion |
ocker | olympiad | orderliness |
octal | omelette | orientalism |
octet | omission | orientalist |
octyl | omnivore | orientation |
odeon | omphalos | originality |
odium | oncogene | origination |
odour | oncology | ornithology |
offal | one-itis | ornithopter |
offer | one-shot | orosomucoid |
offie | onlooker | orthogneiss |
oflag | ontogeny | orthography |
ohana | ontology | orthopedics |
oikos | openness | oscillation |
oiler | openside | osmotherapy |
okada | openwork | ostentation |
okapi | operator | outbreeding |
okrug | operetta | outbuilding |
oldie | opponent | outdoorsman |
oleum | opposite | outer-space |
oleyl | opsimath | outfielding |
oligo | opticals | out-patient |
oliva | optician | out-swinger |
olive | optimism | overanxiety |
ollie | optimist | overbalance |
ology | opulence | overconcern |
ombre | orangery | overdraught |
omega | oratorio | overfishing |
onion | Ordering | overfunding |
onlap | ordinand | overgarment |
onlay | ordinary | overgrazing |
onset | ordinate | Overhauling |
oomph | ordnance | Overheating |
Opera | orefield | overpayment |
opine | organdie | overspender |
opium | organism | overthrowal |
opsin | organist | overtrading |
optic | origanum | overvoltage |
oracy | original | overweening |
orang | ornament | oviposition |
orbit | Orthicon | oxfendazole |
order | osteitis | oxidisation |
ordre | ostinato | oxyfluoride |
organ | otoscopy | oxygenation |
orgel | outboard | oxyrhynchus |
oribi | outbound | obdurateness |
oriel | outbreak | obliteration |
origo | outburst | obscurantism |
oroya | outcaste | obscurantist |
orpin | outfield | obsolescence |
orris | outgroup | obsoleteness |
ortho | outhouse | obstetrician |
oscar | outlands | oceanography |
osier | outlawry | octogenarian |
ossia | outliner | odontologist |
otaku | outrance | oesophagitis |
other | outreach | olfactometer |
ottar | outremer | oligospermia |
otter | outrider | ombudsperson |
ouija | outsider | omnipresence |
ounce | outskirt | Oneupmanship |
outer | out-tray | one-year-old |
outro | out-turn | onomatopoeia |
ouzel | outworld | operatorship |
ovary | ouvriere | opposability |
ovine | ovangkol | oppositeness |
ovoid | ovenware | opsonisation |
ovolo | overbite | optimisation |
ovule | overcast | optimization |
owlet | overcoat | orang-outang |
owner | overdoor | orchestrator |
oxbow | overdose | orchidectomy |
oxeye | overflow | ordinariness |
oxide | overhand | organisation |
oxime | overhang | organization |
ozone | overhaul | orienteering |
obeche | overhead | orthodontics |
obiter | overkill | orthodontist |
object | overload | orthogenesis |
oblast | overlock | orthopaedics |
oblate | overlord | orthopaedist |
Oblige | overpass | oscillograph |
oblong | overplus | oscilloscope |
oboist | override | ossification |
occult | overseer | osteogenesis |
ocelot | oversman | osteomalacia |
octane | overtime | osteoporosis |
octave | overtone | osteosarcoma |
octavo | overture | osteospermum |
oculus | overtype | otosclerosis |
oddity | overview | outdatedness |
oedema | overwear | outmigration |
oeuvre | overwork | out-of-doors |
offcut | overwrap | outplacement |
office | oximeter | outsiderhood |
offing | oximetry | overactivity |
offset | oxyanion | overcapacity |
ogonek | oxymoron | overclothing |
ogress | oxytocin | Overcrowding |
oidium | ozoniser | overemphasis |
oilcan | obbligato | overestimate |
oilman | obduction | overexertion |
oilrig | obedience | overexposure |
oldman | obediency | overlordship |
oleate | obeisance | Overpressure |
oleoyl | objection | overreaction |
oliver | objective | overreliance |
olivet | obliquity | overtaxation |
omelet | obscenity | overtrousers |
omerta | obscurity | oxyacetylene |
omnium | obsequies | objectiveness |
oncost | obsession | obliviousness |
onrush | obstinacy | obnoxiousness |
oocyte | occlusion | observability |
oodles | occultism | obsessiveness |
oolite | occultist | obtrusiveness |
oolong | occupance | oceanographer |
oompah | occupancy | oesophagogram |
opcode | occurence | offensiveness |
opener | octadecyl | offhandedness |
operon | octopussy | officiousness |
opiate | odalisque | one-of-a-kind |
opioid | odonatist | one-sidedness |
option | oestrogen | one-upmanship |
orache | offchance | opacification |
oracle | offensive | ophthalmology |
oranda | offertory | oppositionist |
orange | officiant | orchestra-pit |
orator | offspring | orchestration |
orbita | off-white | organogenesis |
orcein | old-timer | ornamentalism |
orchid | olecranon | ornamentation |
orchis | oleograph | ornithischian |
ordeal | olfaction | ornithologist |
ordure | olfactory | orthogonality |
orenda | oligarchy | orthomorphism |
orgasm | oligopoly | orthopyroxene |
orgone | oliphaunt | osteomyelitis |
orient | olivewood | osteonecrosis |
origin | ombudsman | ostracization |
oriole | Ommission | out-of-towner |
ormolu | once-over | outspokenness |
orogen | oncomouse | out-thereness |
orphan | one-dayer | overabundance |
orrery | one-liner | overexpansion |
osmium | one-piece | overinclusion |
osmose | onslaught | overprovision |
osprey | oogenesis | overstability |
ostler | open-side | overstatement |
otitis | open-work | overtreatment |
ouster | operatics | overvaluation |
outage | operation | oystercatcher |
outcry | operative | obligatoriness |
outfit | operculum | obsequiousness |
outing | ophiolite | obstructionism |
outlaw | oppressor | obstructionist |
outlay | optimiser | oesophagectomy |
outlet | optometry | oesophagoscopy |
output | optronics | omnicompetence |
outset | orangeade | onchocerciasis |
ouvert | orangerie | openmindedness |
overgo | orangutan | operationalism |
ovulum | orbivirus | ophthalmoscope |
owings | orchestra | ophthalmoscopy |
owling | orchestre | oppressiveness |
Owning | ordinance | orbitosphenoid |
oxalis | organelle | Organification |
oxcart | organiser | orthophosphate |
oxford | organizer | osmoregulation |
oxhide | oriflamme | osteoarthritis |
oxicam | orphanage | otolaryngology |
oxtail | orpharion | outlandishness |
oxygen | orthodoxy | outperformance |
oyster | osmometer | outrageousness |
Oatmeal | osmometry | overcollection |
obelisk | ostension | overcommitment |
obesity | osteology | overconfidence |
obligee | osteopath | overcorrection |
obligor | ostracism | overdependence |
oblique | otherness | overdispersion |
obloquy | otterskin | overestimation |
obverse | oubliette | overexpression |
ocarina | oughtness | overindulgence |
occiput | outercoat | overinvestment |
ocellus | outerwear | overpopulation |
octagon | outfitter | overproduction |
octamer | outgrowth | overprotection |
octopus | outrigger | owner-operator |
oculist | outworker | oxidoreductase |
oddball | ovalbumin | oxyhaemoglobin |
odd-bod | overdraft | objectification |
oddness | overdrive | obstructiveness |
odorant | overeater | oligodendrocyte |
odyssey | overglaze | oligomenorrhoea |
oestrus | overlayer | oligonucleotide |
offence | Overnight | oligosaccharide |
offense | overprint | open-handedness |
offeree | overreach | open-mindedness |
offerer | overruler | ophthalmologist |
offeror | overshirt | optoelectronics |
officer | overshoot | organophosphate |
offload | oversight | overconsumption |
offramp | overskirt | overdevelopment |
offside | overspill | overearnestness |
offtake | overspray | over-excitement |
oilbird | oversteer | overfamiliarity |
oilseed | overthrow | overinvolvement |
oilskin | overtrick | oversensitivity |
oilwell | overwatch | overstimulation |
okimono | overwhelm | Oxytetracycline |
oldness | overworld | open-heartedness |
oldster | ovulation | operating-system |
olestra | ownership | otherworldliness |
olivine | oxidation | overaccumulation |
oloroso | oxocarbon | overcompensation |
omentum | oxygenase | over-consumption |
omicron | ozokerite | overexploitation |
omnibus | ozonation | overindebtedness |
onanism | obituarist | overprescription |
oncovin | obligation | oversubscription |
oneness | observance | oligotrophication |
one-off | observator | osteoarcheologist |
opacity | obstructor | overconcentration |
opaline | obtuseness | overdetermination |
Opening | occidental | oversensitiveness |
operand | occupation | operationalisation |
operant | occurrence | operationalization |
opinion | oceanarium | overgeneralization |
opossum | oceanfront | overprotectiveness |
oppidum | octaeteris | overrepresentation |
opticks | octahedron | oversimplification |
optimum | octreotide | overspecialization |
opt-out | oesophagus | Oleomargarine olive |
opuntia | oestradiol | oesophagogastroduodenoscopy |
oralism | off-chance |
Also Check: Definite and indefinite articles Worksheet and Active and Passive Voice Worksheets!
Nouns That Start With O Info Graphics
Printable infographics are a good way to communicate a large amount of details in a brief time in an entertaining way. The nouns that start with O infographic can help teachers and students share their thoughts.
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Also Read: Sentence Structures Worksheets
Recap of what we just learned
- Nouns That Start With O
- What are nouns?
- Nouns That Start With O List
- Nouns That Start With O Info Graphics
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