Sunny is an English word name that means just what it says: "bright" and "cheerful", full of sunshine; it also serves as a nickname for Sonia, Sunniva or Sunday. It fits the current taste for upbeat nature and word names such as Daisy and Summer. Sunny moved into the US top 1000 in 2017, peaked at number 370 in 2024 and holds number 390 in 2025.