Definition of Octopus
Quick Meaning of Octopus
A soft sea animal with eight arms and no bones, able to change its color.
Detailed Definition of Octopus
A sea creature with eight long arms and a soft body that can change color.
How to Pronounce Octopus
Stress pattern: Ooo (3-syllable word).
Tip: Stress the first syllable: OC-to-pus, not ok-TOE-pus. Keep it short and crisp.
Watch out: Saying ok-TOE-pus or AHK-tuh-pus instead of OC-tuh-pus.
Origin and Etymology of Octopus
From Greek oktōpous: okto (eight) + pous (foot or leg).
How to Use Octopus in a Sentence
Each example shows “octopus” with a CEFR level so learners can pick examples that match their fluency.
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“The octopus is in the water.”
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“Octopuses are very intelligent creatures that can solve problems.”
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“The giant octopus can weigh up to 600 pounds and live deep in the ocean.”
Synonyms and Antonyms of Octopus
Common Synonyms for Octopus
Smart Synonyms for Octopus — When to Use Each
- cephalopod
- scientific name for this group of animals
- octopod
- scientific classification term, used in academic writing
Common Collocations with Octopus
These phrases pair with “octopus” in everyday English:
- giant octopus
- octopus ink
- octopus tentacles
- octopus arms
Common Mistakes When Using Octopus
Even fluent speakers slip up with “octopus”. Here’s how to avoid the most common errors:
- ✗ Wrong: The octopi were swimming in the tank.
- ✓ Correct: The octopuses were swimming in the tank.
- Why: Octopuses is the correct modern plural, not octopi.
- ✗ Wrong: The octopus change their color.
- ✓ Correct: The octopus changes its color.
- Why: Singular octopus needs singular verb and 'its' pronoun.
Words Confused With Octopus
- Octopus vs Squid: Octopuses have 8 arms and no fins; squids have 10 tentacles and visible fins. Compare →
Other Forms of Octopus
- Noun: octopus
Frequently Asked Questions About Octopus
What is the meaning of "Octopus"?
A soft sea animal with eight arms and no bones, able to change its color.
How do you pronounce "Octopus"?
The IPA is /ˈɒk.tə.pʊs/. Stress the first syllable: OC-to-pus, not ok-TOE-pus. Keep it short and crisp.
What part of speech is "Octopus"?
"Octopus" is a noun at B1 level (Common European Framework).
What are synonyms for "Octopus"?
Common synonyms include cephalopod, octopod, mollusk.
How do you use "Octopus" in a sentence?
For example: "The octopus is in the water."