The letter "Î" is a character used in several languages, including French and Romanian. It is formed by adding a circumflex accent (^) over the letter "I." In French, this accent can indicate a change in pronunciation or a historical spelling change, while in Romanian, it can affect the vowel sound. In French, "Î" is often found in words like "île," meaning "island." The circumflex accent can also appear in other letters, such as "â" or "ô," and serves various linguistic purposes. Understanding these accents is essential for proper pronunciation and meaning in the respective languages.