# unblock

/ʌnblˈɒk/ (UK) · CEFR B2 · Verb

Source: https://englishreference.com/word/unblock
Updated: 2026-05-30

## Definition

to remove something that is stopping a flow of liquid, air, or traffic. It can also mean to allow a person or website to be used again after being blocked.

For teachers: to remove an obstruction from a passage or channel, or to restore access to a previously restricted resource. Transitive — requires a direct object.

## Examples

- You need to unblock the drain to stop the water from spilling.
- The technician had to unblock the server to allow the employees to access the internal database again.
- After the heavy snowfall, the city crews worked through the night to unblock the main thoroughfare and ensure that emergency vehicles could reach the hospital without delay.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.