what

"What" is a simple-looking word that plays several important roles in English. Its main job is to ask for information. In "What is your name?" it asks for identity, and in "What are you thinking?" it asks about someone's thoughts. It can also appear in exclamations to add force, as in "What a beautiful day!" or "What a surprise!"

Beyond direct questions, "what" can mean "the thing that" or "that which." In the sentence "I don't know what he wants," the word stands for the thing he wants. It also appears in expressions like "the what and the why," where it refers to the nature of something, and in "what with," which introduces reasons or causes, as in "What with the rain and the traffic, we were late."

Historically, "what" comes from the Old English hwæt, which was used both as a question word and as an exclamation to call for attention, famously at the beginning of Beowulf. That long history helps explain why the word is still so flexible today. It is a basic part of English that helps us ask, react, and point to ideas or things without naming them directly. From simple questions to more expressive phrases, "what" is one of the language's core tools.