Is What A Conjunction? | Clause Link Use Rules

The question “is what a conjunction?” comes up a lot in grammar classes, exam prep, and editing work. The word what often sits near other linking words, so it can feel like a conjunction even when it is not labelled that way in modern grammar.

This guide walks through how what behaves in real sentences, why most reference works call it a pronoun or determiner, and where the confusion about conjunction status comes from. By the end, you will know how to label it in homework, tests, and your own writing with confidence.

Is What A Conjunction?

Short answer: in current school and university grammar, what is not grouped with conjunctions such as and, because, or though. Instead, it belongs with wh-words that stand in for a noun or point to a noun phrase.

The Cambridge Dictionary entry on what lists it as a wh-word used as a pronoun and determiner in questions and clause patterns, while separate entries handle conjunctions such as because in a different group. Articles on interrogative pronouns also treat what as part of that pronoun set rather than as a linker on its own.

Common Roles Of What In Modern English

To see why what is not a normal conjunction, it helps to sort its main roles. In each pattern, ask whether what names or replaces something, or whether it simply joins items. Conjunctions only join; they do not stand for people or things.

Role Of what	Conjunction?	Sample Sentence
Interrogative pronoun	No	What did you say?
Interrogative determiner	No	What book are you reading?
Nominal relative pronoun	No	Take what you need.
Object in a noun clause	No	I remember what he said.
Exclamative determiner	No	What a strange idea!
Part of idiom “what with”	Borderline, not core	What with work and study, I am tired.
Fillers in speech (“what, like”)	No	It was, what, three hours long.

In the first five rows, what either stands for a thing or points to a noun. That is classic pronoun or determiner behaviour. Conjunctions such as and or because never stand for things; they only link words or clauses.

The idiom “what with” can feel closer to conjunction territory because it helps link reasons. Still, grammar books usually treat the phrase as an idiomatic preposition-like unit rather than as a plain conjunction, and they keep what itself in the wh-word group.

How Grammarians Classify What

Modern reference works on parts of speech use two labels for what: pronoun and determiner. A pronoun replaces a noun or noun phrase; a determiner comes before a noun and helps point to or limit it. Guides on parts of speech list what with interrogative pronouns such as who, whom, and which, and dictionaries note that it can act as a determiner before a noun in patterns like “what time” or “what colour”.

The Merriam-Webster explanation of conjunctions describes a conjunction as “an uninflected linguistic form that joins together sentences, clauses, phrases, or words”, and lists items such as and, but, and because as clear members of that group. What does not behave like those core linking words, so it does not sit in the same part-of-speech box in current usage charts.

This does not mean writers are wrong when they feel that what helps connect ideas. It does, but it does so while still being a pronoun or determiner at the same time. Many wh-words have this double duty: they both stand for something and introduce a clause that hooks into the rest of the sentence.

What As A Conjunction In Real Sentences

Old textbooks and some school worksheets sometimes label what as a conjunction in special patterns. Grammars that use this label usually have a narrower set of parts of speech and treat any clause-introducing word that is not clearly a preposition as a conjunction.

Take the sentence “I gave him what help I could.” Under a modern scheme, what acts as a determiner inside the noun phrase “what help I could” and the whole phrase works as the object of the verb gave. Under an older scheme, a teacher might call what a connective because it stands at the front of a clause-like structure that relates to the rest of the sentence.

Another pattern that triggers debate is the idiom “what with”. In “What with the rain and the traffic, we arrived late”, some writers treat “what with” plus its phrase as a kind of reason marker, similar to because of. The linking function is real, yet most modern descriptions still file what under pronouns or determiners and handle the whole expression as a fixed idiom.

The main point for tests, editing, and everyday writing is this: when you tick boxes for parts of speech, treat what as a wh-pronoun or wh-determiner rather than as a stand-alone conjunction, unless an exam board or teacher gives a different rule for that course.

Comparing What With Clear Conjunctions

To keep labels straight, it helps to contrast what with words that every source agrees are conjunctions. Those linking words do not replace nouns; they attach two units and express a relation such as addition, contrast, cause, or condition.

Word	Part Of Speech	Typical Function
and	Conjunction	Joins equal words, phrases, or clauses
but	Conjunction	Joins ideas with contrast
because	Conjunction	Introduces a reason clause
if	Conjunction	Introduces a condition clause
that	Conjunction / subordinator	Introduces a noun clause
what	Pronoun / determiner	Stands for an unknown thing and starts a clause

In every row except the last, the word joins two units without standing in for a person or thing. In the last row, what represents “the thing that”, while the clause it introduces provides the content. That difference in function is why modern grammar keeps what outside the central conjunction list.

When students confuse what with conjunctions, they often look only at the presence of a clause. A better habit is to ask two questions: “Does this word join units?” and “Does it also stand for someone or something?” If the word only joins, it is a strong candidate for conjunction status. If it both joins and stands for something, it probably belongs with pronouns or determiners.

Is What A Conjunction? In Exams And Worksheets

People often type the phrase is what a conjunction? into a search box after bumping into a tricky worksheet. A question might ask you to underline conjunctions in a sentence that contains what. That task feels confusing if one set of notes uses one label while another set uses a different label.

Exam boards and course books increasingly follow modern descriptions that list wh-words such as what under pronouns or determiners. Conjunction lists in those courses stick to items such as and, or, but, because, so, and a few others. If a mark scheme treats what differently in a specific pattern, teachers usually flag that ahead of time.

As a safe rule during study, treat what as a pronoun or determiner unless the worksheet instructions clearly say otherwise. You can still mention in notes that some older books once grouped it with conjunctions in special idioms, so you are ready if a question uses that older language.

Spotting What In Real Sentences

The fastest way to label what is to check the words around it. If a noun follows directly, such as “what time” or “what song”, then what works like a determiner in that noun phrase. If no noun follows and the clause could stand in for “the thing that”, then what acts as a pronoun.

Look at these patterns:

• Question pattern:What did they decide?
• Noun phrase pattern: She did not hear what answer you gave.
• Nominal relative clause: Take what suits your needs.
• Exclamation:What a busy week that was.
• Reason idiom:What with the noise outside, the baby stayed awake.

In each case, what has a job inside the clause: it stands for an unknown thing, or it points to a noun. A pure conjunction such as because cannot fill that slot; it links the clause but does not fill a noun role inside it.

Teaching And Learning Tips

If you teach English or tutor students, you can reduce stress around this topic by giving one clear classroom rule. Many teachers say something like “Treat what as a wh-pronoun or wh-determiner; keep conjunction for words such as and, but, or, and because.” That simple rule keeps test answers consistent and matches current reference works.

When learners ask why their book once called what a conjunction, you can point out that grammar labels change over time. Older schemes often had fewer categories; newer schemes separate pronouns, determiners, and conjunctions more sharply. Linking this change to visible examples in a trusted dictionary or grammar site helps students see that the shift is based on close study of real language use, not on random preference.

For self-study, try building your own mini-list of sentences with what, then label the word in each one. Include questions, statements, exclamations, and idioms. Over time you will notice that nearly every sentence works fine when you call what a pronoun or determiner, while labelling it a conjunction adds little and sometimes muddies the pattern.

Quick Recap On What And Conjunctions

For modern grammar courses, the safe answer to the question in your head is no: in regular teaching materials, what almost always shows up as a wh-pronoun or wh-determiner that introduces a clause while still standing for “the thing that”.

You will still see the word near conjunctions, and now you know why that can lead to confusion. When you check a sentence, ask whether the word only links units or also stands for something. That two-step test keeps what in its pronoun or determiner slot, keeps true conjunctions in their own slot, and helps your grammar work stay clear and steady.