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4-Letter Words That Start with O for Kids - List of Essential Vocabulary Words

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Written by
Scott Sosso

The Complete Collection of 4-Letter Words Starting with "O" to Boost Kids' Reading & Spelling Abilities

Our age-specific word lists are derived from a study on the learning age of over 30,000 English words, ensuring educational relevance. We vet words for kid-friendliness using advanced tools and prioritize vocabulary based on usage frequency, informed by extensive research, to benefit children's learning.

LUCA's compilation of 4-letter words that start with "O" is a fantastic way for your child to enhance their vocabulary. It's a comprehensive guide that enables you, as a parent or teacher, to give kids a boost in their language development. Within this list, you'll find words that cater to children of all educational levels, ranging from prekindergarten right through to grade 9. Think of words that are as simple as "oval" for younger learners to more intriguing ones like "omen" for older students. This tool is perfect for reinforcing reading comprehension and spelling skills. By introducing them to this selection, you set the stage for a broader vocabulary that can improve their ability to express themselves in writing and articulation. So why not start expanding your child's vocabulary with these 4-letter words that start with "O" today?

4-Letter Words that Start with

O

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oar
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oatmeal
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octopus
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oil
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olive
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onion
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orange
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owl

4-Letter Words that Start with O for Pre-K 3 (3-Year-Olds)

oink

okay

ouch

Sentences with 4-Letter Words that Start with O for Pre-K 3 (3-Year-Olds)

Introduce your little one to the letter "O" with our collection of sentences featuring 4-letter words that start with "O". Perfect for 3-year-olds, this selection is crafted to spark curiosity and encourage early reading skills. Enjoy exploring together!

Pigs say 'oink' when they are happy and content."

The little piglet let out a loud 'oink' as it played in the mud."

Children love to imitate animal sounds, like 'oink oink' for pigs."

It's okay if you spill your juice. We can clean it up together.

If you feel sad, it's okay to ask for a hug.

Okay, let's count to three and then jump!

The baby touched the hot pan and exclaimed, "Ouch!" in pain.

Ouch!" cried the little girl as she accidentally bumped her knee on the table.

When the kitten stepped on a sharp toy, it meowed, "Ouch!" in surprise.

4-Letter Words that Start with O for Pre-K 4 (4-Year-Olds)

once

only

ours

Sentences with 4-Letter Words that Start with O for Pre-K 4 (4-Year-Olds)

Let your 4-year-old dive into language learning with our fun sentences! We're looking at 4-letter words that start with "O". These simple sentences are perfect for young minds to grasp and enjoy. Start the adventure below!

We brush our teeth twice a day, once in the morning and once at night.

Once upon a time, there was a princess who lived in a castle.

Once you finish your snack, we can go outside and play.

You can play with your toys, but only after cleaning up.

Remember, only use your inside voice when we're inside the classroom.

Only one cookie left for each of you, so share it nicely.

The sandbox is our special spot, it's where we have so much fun together.

These toys are ours, we can all play with them.

This book belongs to us, it's ours to read.

4-Letter Words that Start with O for Pre-K (5-Year-Olds)

obey

open

oval

oven

over

Sentences with 4-Letter Words that Start with O for Pre-K (5-Year-Olds)

Let's make learning fun for your 5-year-old with sentences featuring 4-letter words that start with "O"! This playful journey is perfect for pre-K kids, introducing new words in a simple, engaging way. Get ready to explore together!

When your parents tell you to clean your room, you should obey them.

It is important to obey the rules and take turns.

Please obey the teacher's instructions and listen carefully.

3. Let's open the box and see what surprise is inside!

1. The teacher asked the students to open their books to the first page.

2. We can go to the park and play on the open playground.

We draw an oval shape to make a face for our art project.

My plate at lunch is in the shape of an oval.

The shape of the balloon is oval, like an egg.

Mommy cooks yummy pizza in the oven for dinner.

Be careful, the oven is hot and we shouldn't touch it.

We use an oven to bake cookies for snack time.

We played with the toy cars and made them drive over the ramps.

The teacher asked the children to jump over the colored cones.

After we eat lunch, we have recess and run all over the playground.

4-Letter Words that Start with O for Kindergarten (6-Year-Olds)

odor

Sentences with 4-Letter Words that Start with O for Kindergarten (6-Year-Olds)

Let's make learning fun for your 6-year-old! Check out these sentences showcasing 4-letter words that start with "O". It's a simple and enjoyable way for kindergarteners to pick up new words. Get ready for some fun discoveries!

I can smell a sweet odor coming from the bakery.

I knew it was my dog who caused the bad odor in the room.

Flowers have a pleasant odor that makes the garden smell wonderful.

4-Letter Words that Start with O for 1st Grade (7-Year-Olds)

oats

oily

ooze

Sentences with 4-Letter Words that Start with O for 1st Grade (7-Year-Olds)

Help your 7-year-old discover the fun in four-letter words that start with "O"! We've crafted sentences perfect for first graders, making learning new words exciting and easy. Find out more below!

Farmers use oats to feed their horses and other animals on the farm.

Some cookies are made with oats instead of wheat flour.

Eating a bowl of warm oats for breakfast is a healthy way to start the day.

My face looks shiny because I put oily sunscreen on.

The pizza had a lot of oily cheese on top.

We used an oily cloth to clean up the spilled paint.

Be cautious near the swamp, as the muddy water can ooze out between your toes.

Careful! The green goo began to ooze out of the bottle.

The slime monster's slimy tentacles oozed through the dark cave.

4-Letter Words that Start with O for 2nd Grade (8-Year-Olds)

odds

Sentences with 4-Letter Words that Start with O for 2nd Grade (8-Year-Olds)

Excite your 8-year-old with the joy of learning new words! We're exploring sentences that include 4-letter words starting with "O". These examples are perfect for second graders, making learning fun and easy. Get ready to discover together!

In a race, the odd-numbered lanes are on one side of the track, while the even-numbered lanes are on the other side.

I like to play games of chance, like flipping a coin and guessing odds.

The odds of winning the lottery are very low, so it's not a reliable way to make money.

4-Letter Words that Start with O for 4th Grade (10-Year-Olds)

omit

Sentences with 4-Letter Words that Start with O for 4th Grade (10-Year-Olds)

Get your 10-year-old excited about expanding their vocabulary! We're focusing on sentences that include 4-letter words starting with "O". These examples are perfect for fourth graders, making learning new words both fun and easy. Let's check them out together!

Please omit any personal information when sharing your story with the class.

In your essay, don't forget to omit any repetitive ideas.

To make your paragraph shorter, you can omit any unnecessary details.

4-Letter Words that Start with O for 5th Grade (11-Year-Olds)

oath

Sentences with 4-Letter Words that Start with O for 5th Grade (11-Year-Olds)

Elevate your 11-year-old's vocabulary with this exciting selection of sentences featuring 4-letter words that start with "O". Tailored for fifth graders, these examples are perfect for enriching their language skills in a fun and engaging way. Let's get started on this vocabulary adventure!

Before becoming a citizen, you must take an oath to uphold the laws of the country.

When you join a club, you may have to recite an oath promising to follow the club's rules.

Police officers take an oath to protect and serve the community.

4-Letter Words that Start with O for 6th Grade (12-Year-Olds)

omen

Sentences with 4-Letter Words that Start with O for 6th Grade (12-Year-Olds)

Spark your 12-year-old's interest in vocabulary with our collection of sentences featuring 4-letter words that start with "O". Tailored for sixth graders, these examples blend learning with creativity to enhance language skills. Discover them below!

As she saw a black cat cross her path, she felt it was a bad omen.

The dark storm clouds in the distance were seen as an omen of the coming rain.

The fortune teller's prediction of finding a four-leaf clover was seen as a lucky omen.

4-Letter Animal Words that Start with O

opah

Sentences with Animals that Start with "O"

Discover the animal kingdom with our collection of sentences featuring animals that start with "O". These examples are crafted to enrich your vocabulary and spark curiosity about the wonders of wildlife. Come join us on this exciting exploration!

Opah are warm-blooded fish, allowing them to regulate their body temperature in cold ocean depths.

Despite their large size, opah are agile swimmers, using their pectoral fins to navigate the ocean currents.

The opah, also known as a moonfish, is a unique deep-sea fish with beautiful iridescent scales.

Exploring 4-Letter Words Starting with "O" for Kids

Adjective Hunt

Engage children in a scavenger hunt to find and identify adjectives from the list, such as "only", "oily", and "obey". This activity promotes vocabulary expansion and understanding of descriptive language. Encourage them to use the adjectives in sentences to reinforce learning!

Action Verbs Adventure

Discover action verbs beginning with "O" like "omit", "ooze", and "open". Encourage kids to act out these verbs or create sentences using them. This dynamic activity enhances comprehension of verbs and encourages physical movement for an interactive learning experience!

Auditory Word Association

Play a game where kids associate words like "oath", "omen", and "odor" with sounds or actions. This auditory activity helps strengthen word recognition and memory skills. You can make it more engaging by incorporating sound effects or gestures for each word!

Word and Picture Matching

Pair "O" words from the list with corresponding pictures to reinforce vocabulary retention. Match words like "oven", "oats", and "ouch" with visual representations. This visual learning activity enhances word-picture association and boosts memory recall for young learners!

Spelling Practice

Engage children in spelling practice using words such as "once", "ours", and "oval". Encourage them to write the words multiple times, create sentences with each word, or even invent a fun spelling chant. This activity enhances spelling skills and reinforces word recognition in a playful manner!

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Scott Sosso is a serial entrepreneur recognized as one of the top in his industry from a young age. Before the age of 30, he used his entrepreneurial skills to grow a real estate startup to a billion in sales in just three years. Later, he took that entrepreneurial spirit to the healthcare industry, and through various senior leadership roles, he was a key team member who led a healthcare company to 6X gross revenues. While none of these journeys were easy, the process of scaling businesses and navigating complex market dynamics has been a testament to Scott's resilience and business acumen.

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