Genius vs Mastermind

When to use each in English, with meaning, register, and examples.

Genius

Top 1,000 (very common)B2noun

Mastermind

Top 3,000 (common)
Most common: Genius
 GeniusMastermind
Pronunciation🇬🇧 /["/ˈdʒiːniəs/"]/🇺🇸 /["/ˈdʒiːniəs/"]/🇬🇧 //ˈmɑːstəmaɪnd//🇺🇸 //ˈmæstərmaɪnd//
Meaninga very smart personA person with very high intelligence who plans complex ideas or activities.
ExampleAlbert Einstein is often called a genius for his groundbreaking contributions to physics.The true mastermind of the operation was never caught by the police.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 3,000 (common)
CEFR levelB2-
Part of speechnoun
Collocationsgreat, pure, real, flash, spark, stroke, have, show, lie in something, of genius, genius for, great, natural, eccentric, great, pure, real, flash, spark, stroke, have, show, lie in something, of genius, genius forcriminal mastermind, mastermind behind, mastermind of the plan, mastermind strategy, mastermind group
Antonymsfool, simpletonfollower, subordinate
Common mistakesIncorrectly used as a verb (e.g., saying 'to genius' instead of 'to produce genius'), Confusing with 'genius' and 'genius-like,' treating both as adjectives, Using 'genius' without an article (e.g., saying 'Genius is in the room' instead of 'A genius is in the room')Confused with 'mastermind' as a verb, which is less common., Using 'mastermind' without context, making it unclear who or what is being referred to.
Usage notesUsed to describe someone with exceptional intellectual ability. Appropriate in both casual and formal contexts. Avoid when downplaying someone’s abilities or in sarcastic remarks.Use 'mastermind' to refer to someone who is highly intelligent, often in contexts of strategy or planning. It's appropriate in both formal and informal settings but may sound overly dramatic if used casually.

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Genius
Mastermind

Frequently asked questions: Genius vs Mastermind

What's the difference between Genius and Mastermind?

Genius: a very smart person Mastermind: A person with very high intelligence who plans complex ideas or activities.

Which is more common: Genius and Mastermind?

Genius is the most common in everyday English.

Can you show an example of each?

Genius: Albert Einstein is often called a genius for his groundbreaking contributions to physics. Mastermind: The true mastermind of the operation was never caught by the police.

Can I use Genius and Mastermind interchangeably?

Not always. Genius and Mastermind are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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