Have you ever tried searching for the letter U? I guess most people don’t know that U is the least used vowel in the English alphabet. But there are also many more interesting facts about U that are not known at all. As a matter of fact, the search volumes for U are huge. More than 4.5M monthly searches, and over 700k searches just in the United States. Surprised? The letter U has a rich history, dating back to the ancient Phoenician writing system. Here are 7 facts you need to know about the letter U in 2023.