Looking for educational activities for your child? This article introduces a variety of words that start with O for kids, with fun illustrations and examples to help kids learn new vocabulary. From “octopus” to “orange”, these words will keep your child entertained and engaged as they expand their language skills.
While teaching language to children is crucial, it is sometimes challenging. Parents and educators must come up with innovative ways to teach O words to children. For instance, to make the lesson more interesting, use games or activities when teaching kids short, simple O words. Let’s explore this in this guide!
Besides, you can access various printable worksheets for practicing the letter O on our website. Check it out!
What are words that start with O

The letter “O” is the 15th letter of the English alphabet. The letter “O” has a round shape, and it is often used to represent a circular or spherical object. In English, the letter “O” has a variety of sounds. It can be pronounced as a long “oh” sound, as in the word “snow”, or a short “uh” sound, as in the word “love”. It can also be pronounced as a long “o” sound, as in the word “note”, or a short “aw” sound, as in the word “cot.” The letter “O” has a number of different uses in the English language. It is used to spell words, and it is also used in grammar and punctuation. Overall, the letter “O” is an important part of the English alphabet and plays a key role in the language. That’s the reason why your kids should learn the letter O and words starting with this cute-shaped letter.
O words for kids
Preschoolers are only beginning their educational journey. Both the alphabet and several preschool sight words are new to them. Utilize the list below to acquaint them with basic words. Here is the list of easy words that start with O for kids:
- Orange: a round, orange-colored fruit with thin skin and a sweet, juicy flesh
- Once: on one occasion; one time
- Owl: a nocturnal bird of prey with large, forward-facing eyes and a distinctive call
- Ointment: a medicated cream or lotion used to treat or protect the skin
- Ostrich: a large, flightless bird native to Africa, known for its long neck and legs
- Ox: a large, bovine animal used for plowing and transportation
- Olive: a small, green or black fruit that grows on an olive tree, used for cooking and making oil
- Orchid: a flowering plant with showy, colorful blooms, often grown as a houseplant
- One: the number 1
- Oven: a device used for baking or heating, usually fueled by gas or electricity
- Only: being the single one or the sole example; nothing else but
- Oil: a viscous liquid made from pressing or refining certain plants or animals, used for cooking and as a fuel
- Onion: a vegetable with a pungent smell and a round or elongated shape, often used in cooking
- Over: above or higher than something else
- Organ: a part of an animal or plant that performs a specific function, such as the heart or the liver
- Oats: a cereal plant with grains that are often ground into flour or rolled into oats, used for food and feed
- Oral: relating to the mouth or spoken language
- Order: a command or request; a state of being organized or arranged in a particular way
5 letter words that start with O

These are just a few examples of 5-letter words starting with O. There are many more words in the English language that start with “O,” and each has its own unique meaning.
- Onset: the beginning or start of something
- Oasis: a fertile spot in a desert where water is found
- Often: many times; frequently
- Oiled: treated or coated with oil; lubricated
- Omega: the last letter of the Greek alphabet; a symbol of the end or the final point
- Oasis: a place of peace or rest in the midst of a difficult or busy environment
- Onyx: a semiprecious stone with a striped or banded appearance, usually black or white
- Ocher: a yellowish or reddish clay used as a pigment
- Ovoid: shaped like an egg
- Odeum: a small theater or concert hall, especially one used in ancient Greece
- Oaken: made of oak; having the qualities of oak
- Ochre: a yellow or reddish clay used as a pigment
- Odium: general or widespread dislike or disgust
- Ocher: a yellowish or reddish clay used as a pigment
- Odyssey: a long and eventful journey, often filled with challenges and adventures
See more >> Words That Start With N | Lists of Cool and Fun N Words For Kids
Things that start with O
Numerous items or things that start with the letter O. Here is a list of some frequently used words and phrases that begin with O that are suitable for teaching kids:
- Oven: a device used for baking or heating, usually fueled by gas or electricity
- Orange: a round, orange-colored fruit with thin skin and a sweet, juicy flesh
- Oil: a viscous liquid made from pressing or refining certain plants or animals, used for cooking and as a fuel
- Oak tree: a tree with hard, strong wood and leaves with lobed edges, found in many parts of the world
- Ocean: a vast body of salt water that covers most of the Earth’s surface
- Oars: long, flat-ended pieces of wood or metal used for rowing a boat
- Oasis: a fertile spot in a desert where water is found
- Oxygen: a chemical element with the symbol “O” and atomic number 8, essential for the respiration of living organisms
- Orchard: a piece of land where fruit trees are grown
- Obelisk: a tall, four-sided pillar with a pointed top, often used as a monument or marker
- Oatmeal: a porridge made from ground oats, often eaten for breakfast
- Olympics: a major international multi-sport event held every four years, featuring summer and winter games
- Organs: a part of an animal or plant that performs a specific function, such as the heart or the liver
- Organizer: a person or thing that organizes or arranges something
- Outfit: a set of clothes, especially one suitable for a particular occasion
- Overalls: a pair of trousers with a bib and straps that go over the shoulders, worn over other clothes as a protective garment
- Output: the amount of something produced, especially by a machine or system
- Overcoat: a long coat worn over other clothes for warmth or protection from the weather
Cool words that start with O
A wonderful method to develop a broad and diverse vocabulary is through learning interesting and odd terms. When writing essays for university applications or taking the SATs, having a working knowledge of these terms is helpful. A strong vocabulary is also a terrific advantage that can be very helpful in one’s professional life. The following is a list of interesting and fun words that start with O:
- Ombre: a shading effect in which the color graduates from light to dark
- Omnipotent: having unlimited or infinite power
- Oblique: inclined or sloping; not straightforward or direct
- Oodles: a large amount; a great quantity
- Opulent: richly or sumptuously furnished; luxurious
- Outlandish: strikingly or bizarrely different from the norm; strange
- Outfox: outsmart or outmaneuver
- Ovoid: shaped like an egg
- Oedema: the accumulation of excess fluid in the tissue, causing swelling
- Overcast: clouded or obscured; covered with clouds
- Ordinance: a law or regulation made by a local government
- Ostentatious: showy or pretentious in an attempt to impress others
- Occipital: relating to the back part of the head
- Offspring: a person’s children or descendants
- Oscillation: a back-and-forth movement or fluctuation
- Orchestra: a group of musicians who play together, especially in a symphony
- Opalescent: having a lustrous, iridescent appearance
Adjectives that start with O
The letter “O” offers perfection like few other things in life. A perfect circle is an exceptional shape that produces some of the best adjectives you will ever see. You have a plethora of alternatives for your everyday vocabulary when it comes to adjectives that begin with the letter “O”.
- Obliging: willing to do what is requested or required; helpful or accommodating
- Observant: paying attention to detail; noticing and observing things carefully
- Odds-on: likely to happen or be successful; a strong probability
- Okay (or OK): all right; acceptable
- Omnicompetent: having complete knowledge or skill in all areas; all-knowing or all-powerful
- One-of-a-kind: unique; having no other instance or occurrence
- Opalescent: having a pearly, iridescent quality; showing a range of colors like those of the opal
- Open-hearted: kind, warm, and sincere; willing to share one’s feelings and thoughts
- Open-minded: receptive to new ideas and ways of thinking; willing to consider different perspectives
- Opportune: happening or occurring at a suitable or advantageous time; timely
- Optimal: most favorable or desirable; the best possible
- Optimistic: having a positive attitude or outlook; expecting or hoping for the best
- Optimum: the most favorable or best possible condition or state
- Opulent: luxurious or grand; richly adorned or furnished
- Orderly: well-organized and arranged; characterized by order and regularity
- Organized: arranged or planned in a systematic or orderly way; well-structured
- Originative: having the ability to create or originate; innovative or imaginative
- Ornate: elaborately or ornately decorated; decorated with intricate detail
- Orotund: having a full, round, and clear sound; loud and resonant
- Outgoing: friendly and sociable; inclined to seek the company of others
- Out-of-this-world: extraordinary or exceptional; beyond what is normal or expected
- Outstanding: excellent or exceptional; worthy of special notice or recognition
- Overjoyed: extremely or excessively happy; filled with joy
Positive words that start with O
Making sure that kids speak and think positively is the best approach to instilling optimism and excellent qualities in them. You must start early by teaching them how to utilize positive words and how to do so. For your child’s benefit, we’ve provided a list of kind words that start with O B or you can call them “nice o words”.
- Optimistic: having a positive attitude or belief that good things will happen
- Otherworldly: not of this world or earthly; supernatural or divine
- Opulent: richly or sumptuously furnished; luxurious
- Ornate: elaborately decorated or adorned; showy
- Objective: not influenced by personal feelings or opinions; based on facts
- Opalescent: having a lustrous, iridescent appearance
- Open: not closed or blocked; allowing passage or access
- One-of-a-kind: unique; not like any other
- Omnipotent: having unlimited or infinite power
- Okay: all right; satisfactory
- Outwit: outsmart or outmaneuver
- Optimum: the most favorable or desirable condition
- Obedient: complying with or willing to obey rules or orders
- Occupied: engaged or busy with something; not free or available
- Omniscient: having complete or unlimited knowledge
- Obtainable: capable of being obtained or acquired
- Observant: attentive to or noticing details; aware of what is happening around you
- Opportune: suitable or timely; advantageous
- Openhearted: kind and sincere; willing to share one’s feelings and thoughts
- Open-minded: willing to consider new ideas or ways of thinking
- Orderly: well-organized and systematic; neat and tidy
- Organized: arranged in an orderly way; well-planned
- Organic: relating to living organisms or their products; natural
- Original: new and not copied from something else; unique
- Ornamental: serving as decoration; not functional
- Outgoing: friendly and sociable; outgoing
- Out-of-this-world: extraordinary or exceptional; amazing
- Overflowing: full to the point of overflowing; overflowing
- Overjoyed: extremely happy or pleased
- Outdid: surpassed or exceeded in achievement or excellence
See more >> Words That Start With P | Teaching P Words for Kids
Cute words that start with O
Here are a few cute words that start with the letter “O” and their meanings:
- Oodles: a large amount; a great quantity (e.g. “I have oodles of toys!”)
- Oomph: energy, enthusiasm, or vigor (e.g. “She’s got a lot of oomph!”)
- Oogie: a child’s term for a bug or other small creepy-crawly creature (e.g. “Ew, there’s an oogie on my arm!”)
- Oinky: a playful term for a pig (e.g. “Look at the oinky piglets!”)
- Oodle: a playful term for a large amount (e.g. “I have an oodle of stickers!”)
Words that start with Ao
There are quite a few words that start with Ao and their meanings can be slightly difficult for kids to understand or remember. Here are what we found:
- Aortal: relating to the aorta, the main artery in the human body
- Aortic: relating to the aorta, the main artery in the human body
- Aorta: the main artery in the human body, carrying oxygenated blood from the left ventricle of the heart to the rest of the body
- Aoristic: relating to the aorist, a verb tense in Greek, Latin, and other languages that refers to an action that is completed or completed in the past
- Aortae: the plural form of the aorta, referring to more than one aorta
- Aoudad: a type of wild sheep native to the mountains of North Africa
- Aorists: the plural form of aorist, referring to more than one verb tense in Greek, Latin, and other languages that refers to an action that is completed or completed in the past
- Aorist: a verb tense in Greek, Latin, and other languages that refers to an action that is completed or completed in the past
How to teach kids words that start with O?
There are many ways to teach kids words that start with O. Here are a few ideas:
- Use illustrations: Show kids pictures of objects that start with the letter “O’, such as an octopus, an ostrich, and an orange. Ask them to say the name of each object and then have them repeat the words after you.
- Play word games: Play word games that involve words that start with the letter “O’, such as Hangman or Scrabble. You can also make up your own word games, such as coming up with as many words as possible that start with “O” in a certain amount of time.
- Read books: Choose children’s books that feature words that start with the letter “O’, such as “Olivia” or “The Very Hungry Caterpillar’. As you read the book, point out the words that start with “O” and have kids repeat them after you.
- Use flashcards: Create flashcards with pictures of objects that start with the letter “O” on one side and the word written in capital letters on the other side. Have kids match the pictures to the words and say the words out loud.
- Write sentences: Have kids write sentences using words that start with the letter “O”. For example, “The octopus swam through the ocean”.This will help kids practice spelling and grammar skills while also reinforcing their understanding of words that start with “O”.
In conclusion, teaching kids words that start with the letter O can be a fun and educational activity. By incorporating games, hands-on activities, and visual aids, children can learn new vocabulary and improve their language skills. It’s important to vary the types of words and activities to keep things interesting and engage children’s different learning styles. Additionally, incorporating words into everyday conversations and contexts can help children retain and use the words they have learned. With patience and creativity, teaching kids words that start with O can be a rewarding experience for both the teacher and the student.