Block vs Interfere

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

Block

Top 1,000 (very common)B1noun

Interfere

Top 2,000 (common)C1verb
Most common: Block
 BlockInterfere
Pronunciation🇬🇧 /["/blɒk/"]/🇺🇸 /["/blɑːk/"]/🇬🇧 /["/ˌɪntəˈfɪə(r)/","/ˌɪntəˈfɪəz/","/ˌɪntəˈfɪəd/","/ˌɪntəˈfɪərɪŋ/"]/🇺🇸 /["/ˌɪntərˈfɪr/","/ˌɪntərˈfɪrz/","/ˌɪntərˈfɪrd/","/ˌɪntərˈfɪrɪŋ/"]/
MeaningTo stop something from happening or to make it impossible to pass.To get in the way of something or someone.
ExampleHe threw a block of wood into the fire.I wish my parents would stop interfering and let me make my own decisions.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB1C1
Part of speechnounverb
Collocationsbig, huge, large, on the chopping block, high-rise, tower, tenement, in a/​the block, block of, city, around the block, round the block, block from, city, around the block, round the block, block from, mental, writer’s, experience, have, suffer from, big, huge, large, on the chopping blockseriously, directly, constantly, be allowed to, have a right to, attempt to, in, with
Antonymsallow, permit, facilitateassist, help, support
Common mistakesConfused with 'block' as a noun vs. verb., Using 'block' with the wrong prepositions., Saying 'blocked by' instead of 'blocked from'.'Interfere' is often confused with 'intervene', which has a slightly different meaning., Learners sometimes use 'interfere' without a preposition, which can sound awkward., Using 'interfere' when talking about positive involvement instead of negative disruption.
Usage notesUse 'block' when referring to stopping something physically or metaphorically. It's appropriate in both everyday and formal contexts. Avoid using it in overly casual conversations.Use 'interfere' in situations where someone or something disrupts another's activities. It's generally neutral but can be negative in formal contexts, like in work or legal matters.

Frequently asked questions: Block vs Interfere

What's the difference between Block and Interfere?

Block: To stop something from happening or to make it impossible to pass. Interfere: To get in the way of something or someone.

Which is more common: Block and Interfere?

Block is the most common in everyday English.

Are Block and Interfere the same CEFR level?

Block: B1, Interfere: C1 on the CEFR scale.

Can I use Block and Interfere interchangeably?

Not always. Block and Interfere 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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