List of Easy Words That Start With O (Great for Kids and Preschoolers)

Looking for easy words that start with O? In this post, I’ve put together a list of some words beginning with O that are easy for kids (and adults) to spell, sound, and understand.

The letter O is a great place to start when learning the basics of structuring a sentence.

From short 3-letter words like ‘oar’ and ‘owl’ that are perfect for preschoolers to longer words like ‘opening’ and ‘octopus’ for kindergarteners – you’ll find plenty of easy words starting with H below:

Easy Words That Start With O

Oar – a pole with a flat blade, used to row or steer a boat through the water.

Omelet – a dish of beaten eggs cooked in a frying pan and served plain or with a savory or sweet topping or filling.

Once – on one occasion or for one time only.

Orange – a large round juicy citrus fruit with a tough bright reddish-yellow rind.

Ostrich – a flightless swift-running African bird with a long neck, long legs, and two toes on each foot. It is the largest living bird, with males reaching a height of up to 2.75 m.

Oval – having a rounded and slightly elongated outline or shape like that of an egg.

Oven – an enclosed compartment, usually part of a cooker, for cooking and heating food.

Over – extending directly upwards from.

Owe – have an obligation to pay or repay (something, especially money) in return for something received.

Owl – a nocturnal bird of prey with large eyes, a facial disc, a hooked beak, and typically a loud hooting call.

Own – used with a possessive to emphasize that someone or something belongs or relates to the person or thing mentioned.

Medium Difficulty Words That Start With O

Oasis – a fertile spot in a desert, where water is found.

Oblivious – not aware of or concerned about what is happening around one.

Obscure – not discovered or known about; uncertain.

Obstacle – a thing that blocks one’s way or prevents or hinders progress.

Occupy – reside or have one’s place of business in (a building).

Octopus – a cephalopod mollusc with eight sucker-bearing arms, a soft body, strong beaklike jaws, and no internal shell.

Offensive – causing someone to feel resentful, upset, or annoyed.

Offline – not controlled by or directly connected to a computer or the internet.

Offspring – a person’s child or children.

Oil – a viscous liquid derived from petroleum, especially for use as a fuel or lubricant.

Oink – the characteristic grunting sound of a pig.

Oldest – having lived for a long time; no longer young.

Olive – a small oval fruit with a hard stone and bitter flesh, green when unripe and bluish black when ripe, used as food and as a source of oil.

Omen – an event regarded as a portent of good or evil.

Only – and no one or nothing more besides; solely.

Opening – a space or gap that allows passage or access.

Operator – a person who operates equipment or a machine.

Opossum – an American marsupial which has a naked prehensile tail and hind feet with an opposable thumb.

Opposition – resistance or dissent, expressed in action or argument.

Optimize – make the best or most effective use of (a situation or resource).

Optional – available to be chosen but not obligatory.

Opulent – ostentatiously costly and luxurious.

Orbital – relating to an orbit or orbits.

Ordeal – a very unpleasant and prolonged experience.

Order – the arrangement or disposition of people or things in relation to each other according to a particular sequence, pattern, or method.

Ornament – a thing used or serving to make something look more attractive but usually having no practical purpose, especially a small object such as a figurine.

Orphan – a child whose parents are dead.

Otherwise – in circumstances different from those present or considered; or else.

Otter – a semiaquatic fish-eating mammal of the weasel family, with an elongated body, dense fur, and webbed feet.

Ounce – a unit of weight of one-sixteenth of a pound avoirdupois (approximately 28 grams).

Outdoor – done, situated, or used out of doors.

Outlaw – a person who has broken the law, especially one who remains at large or is a fugitive.

Outnumber – be more numerous than.

Outraged – arouse fierce anger, shock, or indignation in (someone).

Outside – the external side or surface of something.

Outskirts – the outer parts of a town or city.

Outweigh – be heavier, greater, or more significant than.

Overcoat – a long warm coat.

If there are any easy words beginning with O that you would like to see added to this list, please drop me a comment below and I’ll add them.

If you didn’t find what you were looking for – or maybe you just want more easy words – click any of the letters below to see a list of easy words starting with that letter of the alphabet:

List of Easy and Medium Difficulty Words From Other Letters of the Alphabet:


Image credits – Photo by Jerry Wang on Unsplash

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