Casey

Casey is a unisex name with Irish origins, deriving from the Gaelic 'Cathasaigh', meaning 'vigilant' or 'watchful'. It carries a friendly and approachable tone, making it a favorite for both boys and girls through various generations. Casey was particularly popular in the late 20th century, with famous bearers including Casey Kasem, the American DJ, and Casey Affleck, the actor. It remains a playful and timeless choice, often lauded for its gender-neutral appeal. As a bonus, it's straightforward and doesn't usually lend itself to nicknames, maintaining its crisp, clean sound.