Arguably vs Possibly vs Potentially

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

Arguably

Top 2,000 (common)C1adverb

Possibly

Top 2,000 (common)B1adverb

Potentially

Top 2,000 (common)B2adverb
 ArguablyPossiblyPotentially
Pronunciation🇬🇧 /["/ˈɑːɡjuəbli/"]/🇺🇸 /["/ˈɑːrɡjuəbli/"]/🇬🇧 /["/ˈpɒsəbli/"]/🇺🇸 /["/ˈpɑːsəbli/"]/🇬🇧 /["/pəˈtenʃəli/"]/🇺🇸 /["/pəˈtenʃəli/"]/
MeaningIt can be said that something is true.maybe or maybe not; not sureIt means something might happen or could be true.
ExampleHe is arguably the best actor of his generation.It could possibly rain tomorrow, so take an umbrella.a potentially dangerous situation
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)Top 2,000 (common)
CEFR levelC1B1B2
Part of speechadverbadverbadverb
Collocationsarguably the best, arguably true, arguably effectivepossibly true, possibly available, possibly dangerouspotentially dangerous, potentially useful, potentially harmful, potentially beneficial, potentially effective
Antonymsundeniably, certainly, definitely, incontrovertiblydefinitely, certainlydefinitely, certainly
Common mistakesUsing 'arguably' too strongly without supporting evidence., Confusing it with 'arguably' as a noun., Forgetting to follow it with a specific claim or statement.'Possibly' is often confused with 'probably'—they mean different things., Learners may omit 'possibly' in sentences where it's needed., Some learners incorrectly use 'possibly' with the gerund form (e.g., 'possibly going').Using 'potentially' in place of 'actually', Confusing 'potentially' with 'probably', Overusing 'potentially' in informal speech
Usage notesUse 'arguably' when making a statement that can be supported with evidence. It is often used in discussions or debates but may be too strong for casual conversation.Use 'possibly' when you want to express uncertainty or doubt about something. It's generally neutral, suitable for both spoken and written contexts, but avoid it in very formal writing where you might prefer words like 'potentially'.Use 'potentially' when discussing possibilities or probabilities. It's suitable for both spoken and written English but may feel too formal in casual conversations.

Frequently asked questions: Arguably vs Possibly vs Potentially

What's the difference between Arguably, Possibly, and Potentially?

Arguably: It can be said that something is true. Possibly: maybe or maybe not; not sure Potentially: It means something might happen or could be true.

Which is more advanced: Arguably, Possibly, and Potentially?

Arguably is the highest level, at C1, on the CEFR scale.

Are Arguably, Possibly, and Potentially the same CEFR level?

Arguably: C1, Possibly: B1, Potentially: B2 on the CEFR scale.

What part of speech are Arguably, Possibly, and Potentially?

Arguably: adverb, Possibly: adverb, Potentially: adverb.

Can you show an example of each?

Arguably: He is arguably the best actor of his generation. Possibly: It could possibly rain tomorrow, so take an umbrella. Potentially: a potentially dangerous situation

Can I use Arguably, Possibly, and Potentially interchangeably?

Not always. Arguably, Possibly, and Potentially 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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