Octopuses vs Octopi

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What’s the difference between them?

Octopuses

Meaning:

Octopuses is the plural form of the word octopus, which is a sea creature with eight arms.

Examples:

1. The octopuses in the aquarium were an array of shades of purple and pink.

2. The octopuses tentacles were moving gracefully through the water.

3. The octopuses managed to find their way out of the tank and into the open sea.

Octopi

Meaning:

Plural form of octopus

Examples:

1. There were a multitude of colorful octopi in the tidepool.

2. The octopi made a great addition to the aquarium.

3. The octopi were surprisingly playful and interacted with each other.

Learn similar and opposite words to spot the difference

Synonyms

Antonyms

Octopuses

1. Cephalopods

2. Eight-armed mollusks

3. Inkfish

4. Devilfish

5. Ink squirters

1. Fish

2. Single-celled organisms

3. Vertebrates

4. Land animals

5. Stay in one place

Octopi

1. Cephalopods

2. Tentacled creatures

3. Cuttlefish

4. Kraken

5. Squid

1. One

2. Unison

3. Disconnect

4. Inactive

5. Repel

Tricks for mastery

Useful tips to understand the difference between confusing words "Octopuses", "Octopi".

1. Both words are correct.

2. Octopuses is simpler is used more often.

Check the full list of commonly confused words in English

Learn the difference

Frequently asked questions

In what situations should the first word 'octopuses' be used?

Octopuses should be used when referring to more than one octopus, such as in a sentence like, 'The beach was full of octopuses.'

When is the appropriate context for using the second word 'octopi'?

The word 'octopi' should be used when referring to a group of octopuses in an informal context, such as in spoken conversation.

Do the two words 'octopuses' and 'octopi' share the same pronunciation?

No, octopuses is pronounced as /ˈɑːk.tə.pəs/, while octopi is pronounced /ˈɑk.təˌpɑɪ/.

What are some common mistakes people make when using these words?

One of the most common mistakes people make when using 'octopuses' and 'octopi' is using the singular form 'octopus' to refer to more than one octopus. Additionally, some people mistakenly use the word 'octopi' in formal contexts.

Fill in the gaps to check yourself

1. The aquarium contained many __________, including a giant Pacific octopus.

2. The __________ slowly crawled along the ocean floor in search of food.

3. One species of __________ can change the color of its skin in order to blend in its environment.

4. The __________ was able to solve the complex problem by using its eight arms.

5. The researchers found that the __________ had an impressive ability to learn.

6. The __________ displayed remarkable agility in the face of danger.

1. The aquarium contained many octopuses, including a giant Pacific octopus.

Explanation: Octopuses is the correct plural form of the word octopus, which is the singular form of the word.

2. The octopi slowly crawled along the ocean floor in search of food.

Explanation: Octopi is the accepted plural form of the word octopus. It is a less commonly used version of the plural form, but it is still accepted usage.

3. One species of octopuses can change the color of its skin in order to blend in its environment.

Explanation: Octopuses is the correct plural form of the word octopus, which is the singular form of the word.

4. The octopus was able to solve the complex problem by using its eight arms.

Explanation: The word octopus is the singular form of the word and is used when referring to a single octopus.

5. The researchers found that the octopi had an impressive ability to learn.

Explanation: Octopi is the accepted plural form of the word octopus. It is a less commonly used version of the plural form, but it is still accepted usage.

6. The octopuses displayed remarkable agility in the face of danger.

Explanation: Octopuses is the correct plural form of the word octopus, which is the singular form of the word.

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List of Commonly Confused Words

Finding your way around the English language can be hard, especially since there are so many confusing words and rules. So, a list of the most confusing words in English is an extremely useful tool for improving language accuracy and sharing the ideas clearly.