Kassidy

About Kassidy

Kassidy is a spelling of Cassidy, an Irish surname name meaning “descendant of Caiside.” The older byname Caiside means “curly-haired.” Its three-syllable KASS-ih-dee sound is shared with Cassidy, while the initial K gives it a different written outline. Olympic diver Kassidy Cook is a prominent bearer.

Meaning and Irish Roots

Cassidy developed from Irish Ó Caiside, a family name recording descent from someone called Caiside. That byname comes from cas, meaning “twisted” or “curly,” and referred to curly hair.

Kassidy preserves the surname-derived name with a changed first letter. The older history belongs to an Irish family name, while the K spelling is part of its modern use as a personal name.

Cassidy was very rare as a given name before the 1970s. It became established during the 1980s and rose strongly during the 1990s. Kassidy's largest American totals arrived around the turn of the century.

Cass, Cassie, and Cassy are established short forms in the family. Their shorter shape contrasts with the full name's three clear syllables.

Kassidy Cook and Olympic Diving

American diver Kassidy Cook competed at the 2016 Olympics in Rio de Janeiro and returned to Olympic competition in Paris in 2024. Her later appearance brought a major international achievement.

Cook and Sarah Bacon won silver in the women's synchronized three-meter springboard event in Paris. It was the first medal won by the United States team at those Games.

The pair finished with 314.64 points. Their final dive left them waiting for the other teams' results before the silver medal was confirmed, making the closing round particularly tense.

The synchronized event depends on two divers performing together, so the result reflects both individual execution and the coordination of a partnership. Cook's name became closely linked with Bacon's through their shared Olympic performance.

Her career gives Kassidy an association with an athlete who returned to the Games after an eight-year interval, adding a distinctive modern sporting story to the surname name.

College Competition

Cook also competed for Stanford University, where she studied communication. She was a member of Stanford's NCAA championship teams in 2017 and 2018.

Her collegiate record places the name within American university sport as well as international competition. The exact spelling Kassidy appears across both phases of her diving career, from Stanford team records to Olympic results.

Pronunciation and Related Forms

Kassidy is pronounced KASS-ih-dee, with stress on the first syllable. Its middle syllable is light, and the final y has an ee sound.

Cassidy is the closest spelling relative. Both names keep the same rhythm, with the double s marking the central consonant before the lighter ending.

Cass, Cassie, and Cassy belong to the established short-form family. Caiside is the older Irish source behind the surname, rather than an alternative modern English spelling of Kassidy.

American Popularity

Kassidy reached its largest annual female total in the United States in 2000, with 1,007 girls and a rank of 314th. In 2010, 670 girls received the name.

The 2025 total was 240 girls, placing it 1,039th. It also appears for boys, but American use is predominantly feminine. Its strongest newborn use belongs to the period around 2000.

How popular is Kassidy?

In 2025, Kassidy ranked #1,039 among girls in the United States, with 240 recorded uses. The U.S. birth records first list this spelling for girls in 1975; its largest annual count was 1,007 in 2000. Rankings count each spelling separately. They describe national use, so local familiarity can differ. The popularity chart shows whether the name has remained common, returned after a quieter period, or risen recently.