Accessible vs Available vs Open

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

Accessible

Top 2,000 (common)C1adjective

Available

Top 1,000 (very common)A2adjective

Open

Top 1,000 (very common)A1adjective
 AccessibleAvailableOpen
Pronunciation🇬🇧 /["/əkˈsesəbl/"]/🇺🇸 /["/əkˈsesəbl/"]/🇬🇧 /["/əˈveɪləbl/"]/🇺🇸 /["/əˈveɪləbl/"]/🇬🇧 /["/ˈəʊpən/"]/🇺🇸 /["/ˈəʊpən/"]/
MeaningSomething that is easy to reach or use.Able to be used or accessed; not busy.To make something not closed; to allow access.
ExampleThe building is designed to be accessible for people with disabilities.The new book is available at the library now.Please open the window to let in some fresh air.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)Top 1,000 (very common)
CEFR levelC1A2A1
Part of speechadjectiveadjectiveadjective
Collocationsbe, become, remain, highly, very, directly, by, for, to, be, become, remain, highly, very, directly, by, for, tobe, become, make something, easily, freely, readily, for, from, to, be, become, not available for commentbe, gape, hang, fully, wide, partially, be, gape, hang, fully, wide, partially, be, gape, hang, fully, wide, partially, be, gape, hang, fully, wide, partially, be, gape, hang, fully, wide, partially, be, declare something, officially, be, remain, stay, to, be, seem, extremely, fairly, very, about, with
Antonymsinaccessible, unreachableunavailable, busy, occupiedclose, shut
Common mistakesConfusing with 'accessory' which means an add-on or additional item., Using 'accessable' as an incorrect spelling., Mispronouncing it as 'ax-cessible' instead of 'ak-cessible'.Confused with 'available' vs 'availabe' (spelling error), Using 'available' when referring to things that are occupied, like a chair or place, Incorrectly saying 'is available for' without an object, like 'He is available for help.'Using 'opened' in passive forms incorrectly (e.g., 'The door was opened by him' instead of 'The door was opened'), Confusing 'open' with 'close' in oppositional statements, Mixing up 'open' and 'unlocked'
Usage notesUse 'accessible' to describe places, services, or information that is easy for everyone to reach or use. It's often used in contexts like education, urban planning, and technology. Avoid using it in overly casual conversations.Use 'available' to describe things that can be used or people who are free. Avoid in overly casual contexts, like among close friends.Use 'open' in both literal contexts (like doors and windows) and figurative ones (like open discussions). Avoid using it in very formal writing.

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Available
Open

Frequently asked questions: Accessible vs Available vs Open

What's the difference between Accessible, Available, and Open?

Accessible: Something that is easy to reach or use. Available: Able to be used or accessed; not busy. Open: To make something not closed; to allow access.

Which is more advanced: Accessible, Available, and Open?

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

Are Accessible, Available, and Open the same CEFR level?

Accessible: C1, Available: A2, Open: A1 on the CEFR scale.

What part of speech are Accessible, Available, and Open?

Accessible: adjective, Available: adjective, Open: adjective.

Can you show an example of each?

Accessible: The building is designed to be accessible for people with disabilities. Available: The new book is available at the library now. Open: Please open the window to let in some fresh air.

Can I use Accessible, Available, and Open interchangeably?

Not always. Accessible, Available, and Open 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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