Casey
/K-EY-S-IY/
Vigilant and watchful, from the Irish Cathasach meaning alert. An Irish surname that crossed over into wide use as a unisex given name, it names the steady attentiveness of a guardian, the keen-eyed wakefulness of someone who notices and keeps watch, carried easily by anyone regardless of gender.
See Casey scored for your familyMeaning & origin
Casey is a unisex's name of English origin, traditionally used in Christian families. The name means "Vigilant and watchful, from the Irish Cathasach meaning alert. An Irish surname that crossed over into wide use as a unisex given name, it names the steady attentiveness of a guardian, the keen-eyed wakefulness of someone who notices and keeps watch, carried easily by anyone regardless of gender." and belongs to the Courage cluster — names for children who will grow into bold, fearless hearts.
Beyond its Christian heritage, Casey is also used in Atheist traditions, reflecting how this name has traveled across cultures.
Common among British, American, European families, Casey carries cultural weight that goes beyond its dictionary definition — it's a name with a story and a community.
Numerology of Casey
Numerology assigns each name a single-digit destiny number by summing its letter values. Different schools use different mappings — NameRoot computes both so you can see how Casey resonates in either tradition.
How Casey sounds
NameRoot scores the phonetic fit of every name against the sound of your last name. The pronunciation of Casey breaks down into 4 phonemes: /K-EY-S-IY/. In the app, you'll see how those sounds flow with your family name across rhythm, stress, and consonant clusters.
The six signals, applied to Casey
NameRoot scores every name across six independent dimensions. Here's how Casey maps to each — install the app to see the full compatibility score for your specific family.
Names similar to Casey
If Casey resonates with you, these names live in the same world — drawn from the same tradition, sharing the same meaning, or echoing a similar sound.
From the same tradition
Other Christian unisex names, common in British families
Sharing the same meaning
Other Christian unisex names from the Courage cluster
Names that sound similar
Christian unisex names that open with the same syllables as Casey
Common questions about Casey
What does the name Casey mean?
Casey means "Vigilant and watchful, from the Irish Cathasach meaning alert. An Irish surname that crossed over into wide use as a unisex given name, it names the steady attentiveness of a guardian, the keen-eyed wakefulness of someone who notices and keeps watch, carried easily by anyone regardless of gender.." It is a unisex name of English origin, traditionally used in Christian families.
Is Casey a boy or girl name?
Casey is a unisex name, used for any gender.
What is the origin of the name Casey?
Casey is of English origin, used in Christian, Atheist traditions, commonly among British, American, European families.
What is the numerology of Casey?
Casey has a Pythagorean destiny number of 8 — material mastery and executive power.
See how Casey scores for your family
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