US Popularity Rank: 864

Origin: American

Meaning: Vigilant, watchful

Those on the watch for new and trendy updates to classic names will delight in this Irish-slash-American name! Kayce is a gender-neutral name that ticks both the modern twist and last name-as-first name boxes! Kayce is basically Casey, with a contemporary K and an eye-catching spelling. It stems from the Irish last name Ó Cathasaigh, which itself comes from Cathassach, meaning "vigilant” and “watchful." If you’re in the market for cool K names, Kaci, Kace, or Kasey may also tickle your fancy.