Writing & StyleRule guide

Relative Determiners

Some grammar references use “relative determiner” for forms such as “what,” “which,” and “whose” when they modify a following noun outside an interrogative question. Grammar terminology varies across references, so distinguish the observable function from the label; the same forms can act as pronouns or interrogative determiners in other constructions.

Quick answer

Some grammar references use “relative determiner” for forms such as “what,” “which,” and “whose” when they modify a following noun outside an interrogative question.

Key details

Core Issuerecognizing determiner function in relative contexts
Registergeneral English grammar
Rule Familydeterminers and relative constructions

Important caveats

Scope Boundary

Grammar terminology varies across references, so distinguish the observable function from the label; the same forms can act as pronouns or interrogative determiners in other constructions.

Further guidance

Application

Check whether the word directly determines a noun phrase rather than standing alone: that noun-modifying function is what motivates the determiner label.

Core Rule

Some grammar references use “relative determiner” for forms such as “what,” “which,” and “whose” when they modify a following noun outside an interrogative question.

Practical Application

When your grammar framework uses the term “relative determiner,” apply it to a form such as “which” or “whose” when it introduces a relative construction and modifies a following noun.

Reader Check

Check both function and terminology: the same written word can be interrogative in a question or relative in another construction, and grammar references do not all use identical labels.

Worked Example

In “The committee chose a date, which decision surprised us,” “which” modifies “decision” within a relative construction; in “Which decision surprised you?” it is interrogative.

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. What Is a Determiner? — Scribbr (opens in a new tab)Scribbr · Grammar-reference evidence that what, which, and whose can be called relative determiners when they function as determiners outside questions.
  2. Determiners and quantifiers (opens in a new tab)British Council · Authority used to verify the public writing guidance.

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