complementizer: meaning, definition, pronunciation and examples

C2
UK/ˈkɒmplɪməntʌɪzə/US/ˈkɑːmplɪmənˌtaɪzɚ/

Technical/Linguistics

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Quick answer

What does “complementizer” mean?

A word or morpheme that introduces a subordinate clause and marks it as a complement to a verb, adjective, or noun.

Audio

Pronunciation

Definition

Meaning and Definition

A word or morpheme that introduces a subordinate clause and marks it as a complement to a verb, adjective, or noun.

In theoretical syntax, a functional head (often abbreviated as 'C') that occupies the highest position in the clause structure, hosting elements like conjunctions (that, if, whether) and marking clause type (declarative, interrogative).

Dialectal Variation

British vs American Usage

Differences

No significant lexical or grammatical differences in use. The theoretical concept is identical in both varieties.

Connotations

Purely academic/technical. No regional connotations.

Frequency

Exclusively used in linguistics. Frequency is zero in general English.

Grammar

How to Use “complementizer” in a Sentence

[verb] + [complementizer] + [clause] (e.g., 'think that...')[adjective] + [complementizer] + [clause] (e.g., 'certain whether...')[noun] + [complementizer] + [clause] (e.g., 'question if...')

Vocabulary

Collocations

strong
null complementizerovert complementizercomplementizer phrase (CP)select a complementizer
medium
function as a complementizerthe complementizer 'that'embedded under a complementizer
weak
analyse as a complementizerposition of the complementizercomplementizer deletion

Examples

Examples of “complementizer” in a Sentence

adjective

British English

  • The complementizer position was empty.
  • A complementizer-less clause is common in informal speech.

American English

  • The complementizer node is crucial in the tree diagram.
  • Complementizer selection varies across languages.

Usage

Meaning in Context

Business

Never used.

Academic

Exclusively used in linguistics papers and syntax textbooks.

Everyday

Never used.

Technical

Core term in syntactic theory, used to describe clause structure and selection.

Vocabulary

Synonyms of “complementizer”

Strong

C (abbreviation in syntax)clause introducer

Neutral

subordinating conjunction (in traditional grammar)

Weak

linkersubordinator

Vocabulary

Antonyms of “complementizer”

Watch out

Common Mistakes When Using “complementizer”

  • Misspelling as 'complimentizer'.
  • Using it in non-linguistic contexts.
  • Confusing it with 'complement' (noun phrase) rather than 'complementiser' (clause introducer).

FAQ

Frequently Asked Questions

In traditional grammar, words like 'that', 'if', and 'whether' are called subordinating conjunctions. 'Complementizer' is a more precise theoretical term from generative syntax for the same grammatical function.

Typically, a single clause has only one complementizer position (C). However, in cases of complementizer doubling (e.g., some dialects: 'I think that if that...'), you might find two, but this is non-standard and a subject of study.

'Complementiser' is the standard British English spelling, following the '-ise' convention. 'Complementizer' is the standard American English spelling with '-ize'.

All languages have ways to embed clauses, but not all use a specific word class identical to English complementizers. The syntactic position (C) is considered a linguistic universal, but its phonetic realisation varies.

A word or morpheme that introduces a subordinate clause and marks it as a complement to a verb, adjective, or noun.

Complementizer is usually technical/linguistics in register.

Complementizer: in British English it is pronounced /ˈkɒmplɪməntʌɪzə/, and in American English it is pronounced /ˈkɑːmplɪmənˌtaɪzɚ/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • N/A

Learning

Memory Aids

Mnemonic

Think of a complementizer as the CLASP that attaches a subordinate clause to the main sentence.

Conceptual Metaphor

A BRIDGE or DOORWAY into a subordinate clause.

Practice

Quiz

Fill in the gap
In the phrase 'I wonder .
Multiple Choice

Which of the following is a primary function of a complementizer?

Practise

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Five interactive tools to remember words, train your ear, and build vocabulary in real context — drawn from this dictionary.

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