Slender or fair; potentially a variant of Kelly or Keely
Keyly is a modern American invention, likely created as a phonetic blend or a creative spelling of the Irish names Keely or Kelly. While it lacks a singular ancient root, it carries the associations of its phonetic predecessors, which often relate to grace, slender build, or war. Its rarity makes it a distinctive choice for parents seeking a familiar sound with a unique spelling.
Less common today
Keyly isn't in the latest US Top 1000. It last peaked at #4,916 in 2009.
US births per 5-year period, 1990βpresent (SSA data).