What is the Plural of Octopus?

Last Updated: May 1, 2026, 14:56 IST

Do you know what the plural of Octopus is? This word actually comes from Greek roots, not Latin, which changes the grammar rules entirely. Let’s discover the surprising history and logic behind the three different plural forms.

What is the Plural of Octopus?
What is the Plural of Octopus?

Plural of Octopus: English plurals can be tricky. Usually, we just add an "s" to the end of a word. One cat becomes two cats. However, words borrowed from other languages follow different rules. Some come from Greek, while others come from Latin. This makes things very confusing for writers and students alike. People often argue about the correct way to change these special words. Do you know what the plural of 'octopus' is? In this article, we'll take a look at the history and the science behind this famous word.

What is the Plural of Octopus?

Is the Plural of Octopus 'Octopi' or 'Octopuses'?

The plural of 'octopus' is a classic English language debate. While multiple forms are used, one is technically the most accurate based on the word's origins.

Correct Plural Acceptability
Octopuses Recommended. This is the standard English plural.
Octopi Common but incorrect. It is based on a mistaken belief that the word is Latin.
Octopodes Rare. This follows the original Greek rules but is seldom used.

Why "Octopuses" is the Winner

Here is the simple logic behind why we use these different terms:

  • It's an English Word: Once a word enters the English language, it usually follows English grammar. The standard way to make a word plural in English is to add "-es" or "-s".
  • The Greek Root: The word 'octopus' comes from Ancient Greek (oktōpus), not Latin. In Greek, the plural ending is "-odes". Therefore, 'octopodes' is etymologically 'more' correct than octopi.
  • The Latin Myth: People often use 'octopi' because they assume the word is Latin (like 'cactus' becoming 'cacti'). However, applying Latin endings to a Greek word is considered a "linguistic error".

Note: If you want to be safe and grammatically correct, stick with octopuses. It is clear, simple, and accepted by all major dictionaries.

Kriti Barua
Kriti Barua

Executive Content Writer

Kriti Barua is a skilled content writer with 4+ years of experience in creating clear, engaging, and informative content. She began her writing journey as a Creative Writer Intern at Wordloom Ventures. She holds a BA degree from Delhi University and has completed a one-year diploma in TV Production and Journalism, which adds depth to her research and reporting style.

Kriti has worked across brand writing, marketing content, and digital media, building strong expertise in articles that connect with readers and perform well online. At Jagran New Media, she writes for the GK section, covering national news, international stories, and query-based articles that answer what people actively search for. Her work focuses on easy language, reliable information, strong keywords, and reader-friendly storytelling, making her content both helpful and search-friendly.

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First Published: May 1, 2026, 14:56 IST

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