Casey

The name Casey comes from an Irish root and carries a sense of watchfulness and courage. Its original Gaelic form relates to vigilance and a readiness for action, so the name often feels lively and alert.

As a given name Casey has a friendly, approachable tone. It can sound sporty and energetic on a child, uncomplicated and confident in adulthood. The name sits comfortably as unisex, working well with both strong and softer name styles.

Casey began as an anglicised form of Irish Gaelic surnames derived from the old Gaelic personal name Cathasaigh, which carried meanings linked to vigilance or watchfulness. As with many surnames of Celtic origin, the form moved from family name into use as a given name over the last two centuries, particularly in English-speaking countries.

Its rise as a given name gathered pace in the 20th century, helped by the trend of using surnames as first names and by its uncomplicated, energetic sound. The name became popular for both boys and girls in the United States and later in other English-speaking countries. Several alternative spellings, such as Kasey and Kaci, emerged as parents adapted the name to different tastes. While its Gaelic roots are clear, the precise path from the early Gaelic forms to modern Casey is typical of many names that passed through anglicisation and changing naming fashions.