W
In short
The twenty-third letter of the modern English and Latin alphabets.
In plain words
It is a letter used in writing many languages across the world. In English, it is called double-u because of its shape.
A simple example
You use the letter W to spell common words like 'water', 'window', and 'world'.
Why it matters
It is a vital part of the alphabet for communication in Western languages. Without it, many essential words could not be written correctly.
Easy to mix up
It is often confused with the letter V, especially in handwritten scripts.