Kassidie

Meaning & origin

Kassidie is a modern invented spelling of the more established name Cassidy, which itself derives from the Irish surname Ó Caiside. The name first appeared in U.S. birth records in 1989, reflecting the late-20th-century trend of respelling traditional names with distinctive endings like 'ie' or 'ee'. Its peak popularity occurred in 2001, when it reached its highest recorded usage, though it never entered the top 1,000 nationally. Since 2000, the name has followed a falling trajectory, becoming much less common in recent years. While not tied to any specific region or top states, Kassidie exemplifies the creative naming patterns that emerged in the 1990s and early 2000s, where phonetic variations of familiar names gained brief popularity before declining.

Kassidie is a modern respelling of Cassidy, an Irish surname derived from Ó Caiside meaning 'descendant of Caiside.' The given name Cassidy gained popularity in the United States during the 1970s and 1980s, leading to creative variants like Kassidie. The specific spelling with an 'ie' ending emerged as a fashionable twist in the late 20th century, peaking in 2001 according to Social Security data.