How to use "because of which"

What Does "because of which" Mean?

• Grammatical function: Cause and consequence. It introduces the result or effect of a previously stated reason or situation.
• Typical sentence position: Primarily medial. It connects two clauses within a sentence, rarely appearing at the beginning or end.
• Register: Formal. It's more common in academic writing, legal documents, and other contexts requiring a high level of formality; less suitable for casual conversation.

How to Use It

• Syntactic patterns: It typically follows a clause stating a cause or reason, and is followed by a clause stating the consequence. The clause it introduces acts as a relative clause modifying the preceding clause.
• Punctuation rules: Typically preceded by a comma, especially when it introduces a nonrestrictive (nonessential) clause. A semicolon can be used if the preceding clause is lengthy or complex.
• Grammatical flexibility: It cannot start a sentence. It can be moved in some rare instances, but this often results in awkward phrasing. It cannot be negated directly, although the clause it introduces can express a negative consequence.
• What sounds unnatural or incorrect: Using it in informal contexts. Omitting the comma before "because of which" when it introduces a nonrestrictive clause. Using it at the start of a sentence.

Real-World Examples

"I think we may have overdone it, overplayed it, because of which we lost credibility." — The New Yorker

"Adnan was the subject of the globally popular podcast Serial, because of which his case became a worldwide obsession almost overnight." — The Guardian - Opinion

"However, in pristine form, PEEK exhibits poor wear resistance and higher coefficient of friction (~0.25 to 0.3) leading to frictional losses because of which the usage of PEEK is widely restricted in applications where energy efficiency is of utmost importance." — Wear

"For critics, the subsidy program is fundamentally flawed because of which farmers it supports as well as the kind of eating it encourages." — The Washington Post

"Second, to study the reasons for consultation, the duration of the symptoms because of which consultations without appointment take place, and the assessment by health personnel of the relevance of the emergency." — Atención Primaria

Examples sourced from https://ludwig.guru/s/because+of+which

Similar Phrases and Alternatives

Phrase	Context
as a result of which	A more formal and emphatic alternative.
consequently	A formal adverb indicating a logical consequence.
and therefore	Connects two clauses, indicating a direct result.
for this reason	Introduces an explanation or justification.
thus	More concise and formal than "so"; indicates a logical conclusion.
resulting in	Emphasizes the outcome or effect of an action.
whereby	Implies a specific mechanism or process leading to a result.
due to which	A direct synonym, also formal, but often more concise.

Common Mistakes

• Incorrectly placing it at the beginning of a sentence. "Because of which" is a relative clause connective and needs to follow the clause it modifies.
• Omitting the comma before "because of which" when it introduces a nonrestrictive clause. This can affect readability and clarity.
• Learners often use simpler conjunctions like "because" or "since" instead of this more formal and somewhat archaic expression, or they might incorrectly use "that" instead of "which".

Quick-Reference Summary

Expression	Function	Register	Typical Position
because of which	Expressing cause and consequence	Formal	Medial (after the cause clause)

FAQs

Can "because of which" be used at the beginning of a sentence?

No, "because of which" should not be used at the beginning of a sentence. It functions as a relative clause connective, linking a consequence to a preceding clause that states the cause. Starting a sentence with it is grammatically incorrect and stylistically awkward.

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How does "because of which" differ from simply using "because"?

While both express cause and effect, "because of which" is considerably more formal and typically used to connect two clauses within a single sentence. "Because" can introduce a subordinate clause at the beginning of a sentence or connect two independent clauses with a comma, offering greater flexibility but less formality.

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What's the best way to correct the common mistake of using "that" instead of "which" in this context?

Remember that "which" is used to introduce nonrestrictive relative clauses, providing additional (but not essential) information, while "that" introduces restrictive clauses, which are essential to the meaning of the sentence. Since "because of which" typically introduces nonrestrictive clauses, "which" is the correct choice. If you're unsure, try removing the clause; if the core meaning of the sentence remains, "which" is appropriate.