Definitions

1. interjection

an expression of surprise, astonishment, or inquiry

“She exclaimed, “What a beautiful sunset!””

2. adverb

used to express a question about the nature or identity of something

“What’s wrong with this machine?”

3. pronoun

a word used to ask for information about someone or something, such as their identity, location, or condition

“What are you doing tonight?”

4. noun

a word used to refer to a question, especially one that is not yet fully formed or articulated

“He asked me a question, but I couldn’t understand what.”

5. adverb

used to introduce a question or inquiry

“What do you think about this?”