adverb

whereby

/wɛərˈbaɪ/ · say it: wair·BY

by which

In more detail

1. (adverb) by which; by what. Used to ask how something happens or to explain the method or way that something occurs

2. (adverb) by means of which; through which. Used to show that something is achieved or happens through a particular action or thing

Examples

1. Whereby can we solve this problem?
2. The new law whereby citizens can vote online has increased participation.

How to use whereby

Whereby is a formal, written connective used to introduce or explain a method, mechanism, or means by which something happens or is achieved. It typically appears in legal, technical, or academic contexts, often introducing a clause that clarifies how a preceding statement is accomplished. It is less common in speech than synonyms like 'by which' or 'through which' in everyday contexts.

Common phrases

whereby people can
whereby citizens are able to
whereby a person is entitled to
whereby goods are transported
whereby access is granted

Synonyms

by which · through which · by means of which · in accordance with which · as a result of which

A common mistake

Learners sometimes use whereby when they mean 'where' or confuse it with 'whereby' and 'whereas'; whereby shows method or means, while whereas shows contrast.

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