"alert, vigilant, watchful"
Origin: Irish Gaelic
Language: Irish
Kayci
Does Kayci flow with your last name?
A spirited Irish name meaning watchful and brave
Irish
American
Modern
Playful
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Meaning & Origin
"descendant of Cathach"
Origin: Irish
Language: English
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The Story of Kayci
Kayci is an American phonetic spelling of Casey, which derives from the Irish Gaelic name Cathasaigh, meaning vigilant or watchful in battle (from cathasach meaning watchful). The name was originally a surname meaning descendant of Cathach before transitioning to a given name in the 19th century, especially in Irish-American communities.
Casey and its variants (Kasey, Kacey, Kayci) peaked in the United States during the 1980s and 1990s for both boys and girls, fueled by cultural figures and country singer Kacey Musgraves. The Kayci spelling represents the trend of personalizing spelling to make names feel unique.
In Irish-American culture, Casey has long been associated with working-class pride and resilience, famously immortalized in the poem Casey at the Bat (1888) and the folk hero Casey Jones. The feminine usage grew dramatically in the late 20th century.
Historical Record
Kayci first appeared in US Social Security records in 1974.
Over 1,636 babies have been named Kayci in the United States since SSA records began.
Today, Kayci is past its peak , currently ranked #5,128 for girl names in the US .
Fun Facts
- Casey Jones was a real railroad engineer who became an American folk hero
- Country star Kacey Musgraves popularized the Kacey spelling
- Casey is equally popular for boys and girls in the US
Kayci in Other Languages
Irish
Cathasaigh
French
Casey
Spanish
Kasey
Popularity Over Time
#5,128
Current Rank
Peaked 1990
Based on SSA data 1880–present
Year-by-year popularity data will be available soon.
Famous People Named Kayci
K
Kacey Musgraves
Musician
1988
Grammy Award-winning American country and pop singer known for Rainbow and Golden Hour
C
Casey Affleck
Actor
1975
Academy Award-winning American actor
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Compare Kayci with:
Quick Facts
- Gender
- Girl
- Syllables
- 2
- Popularity Rank
- #5,128
- Total SSA Count
- 26
- Cultural Origins
- Irish American
- Pronunciation
- Easy
- Formality
- Casual
- Cross-Cultural Ease
- High
Alternative Spellings
Common Nicknames
Kay
Kace
Middle Name Ideas
Suggested pairings based on syllable flow and style
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Timeless choice, American heritage match, extended 2-3 combo
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Timeless choice, American heritage match, extended 2-3 combo
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Timeless choice, smooth 2-2 syllable flow
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Timeless choice, American heritage match, extended 2-3 combo
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Timeless choice, American heritage match, extended 2-3 combo
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Timeless choice, smooth 2-2 syllable flow
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Timeless choice, smooth 2-2 syllable flow
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Timeless choice, smooth 2-2 syllable flow
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Timeless choice, smooth 2-1 syllable flow
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Timeless choice, smooth 2-2 syllable flow
Middle Names
Middle Names for Kayci
6 name pairings with syllable flow tips
Sibling Names
Sounds Like Kayci
Phonetic neighbors that share Kayci's rhythm, vowel shape, or consonant cluster. Tap any name to see its full "names like" list.
Sibling Match
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Also a Boy Name
Kayci is also used as a boy name, ranked #29785.
View Kayci as a boy name →Similar Names
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Same Origin Names (Irish)
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Girl
Irish Gaelic origin
"soul, spirit"
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Aleeza
Girl
Hebrew origin
"joyful, one who rejoices"
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Germanic origin
"noble, of noble kind"
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Frequently Asked Questions About Kayci
What does the name Kayci mean?
"alert, vigilant, watchful" (from Irish Gaelic). "descendant of Cathach" (from Irish). Kayci is an American phonetic spelling of Casey, which derives from the Irish Gaelic name Cathasaigh, meaning vigilant or watchful in battle (from cathasach meaning watchful). The name was originally a surname meaning descendant of Cathach before transitioning to a given name in the 19th century, especially in Irish-American communities.
What is the origin of the name Kayci?
Kayci has Irish Gaelic, Irish, and American origins. In Irish Gaelic, it means "alert, vigilant, watchful". In Irish, it means "descendant of Cathach".
Is Kayci a boy or girl name?
Kayci is used as both a girl and boy name. As a girl name, it is ranked #5128. As a boy name, it is ranked #29785. Kayci is more commonly used as a girl name.
How popular is the name Kayci?
Kayci is currently ranked #5128 in popularity for girl names in the United States.
What are common nicknames for Kayci?
Common nicknames for Kayci include Kay and Kace.
What are good middle names for Kayci?
Popular middle name pairings include Kayci Marie, Kayci Lynn, Kayci Elizabeth, Kayci Ann, Kayci Grace, and Kayci Renee.
What are good sibling names for Kayci?
Names that pair well with Kayci as siblings include Brynn, Reece, Quinn, Rylee, Brady, Declan, and Avery.
How many syllables does Kayci have?
Kayci has 2 syllables, making it easy to say and remember.
Is Kayci a common or rare name?
Kayci is an uncommon name, ranked #5128 in the US. Its rarity gives it a distinctive, memorable quality.
What girl names are similar to Kayci?
About the Name Kayci
Kayci is a girl name with Irish and American origins . The name means "alert, vigilant, watchful" in Irish Gaelic .
Is Kayci a boy or girl name? Kayci is used as both a girl and boy name. As a girl name, it ranks #5,128 in popularity. As a boy name, it ranks #29,785. Kayci is more commonly used as a girl name.
Kayci is currently ranked #5,128 in popularity for girl names in the United States.
The name Kayci has 2 syllables, making it easy to pronounce and remember.
Common nicknames for Kayci include Kay and Kace. These shorter forms provide casual alternatives while keeping the elegance of the full name.
Alternative spellings of Kayci include Kaycee, Kayce, Kaycie . Each spelling variation gives the name a slightly different character while preserving its sound and meaning.
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Sources
- U.S. Social Security Administration — National Baby Names Data (popularity rankings and historical trends)
- Behind the Name (etymology and meaning research)
- NamingEverything editorial research and analysis