Kaislyn is a contemporary American feminine name that emerged in the early 2010s as a creative blend of familiar name elements. Morphologically, the prefix “Kai-” recalls the Hawaiian word for “sea,” while the suffix “-slyn” can be read as a novel respelling of Lynn (from Welsh llyn, “lake” or “pool”) or as a phonetic cousin to the English surname-turned-given-name Kinsley (“king’s meadow”). Phonetically it follows the disyllabic, stress-on-the-first-syllable pattern KAYZ-lin (/keɪz.lɪn/), which aligns with prevailing Anglo-American naming conventions. Since its first appearance in U.S. Social Security data in 2012 with six recorded births (ranked 936th), Kaislyn has exhibited modest but consistent use—peaking at 29 occurrences in 2019 (915th) and settling at 22 instances in 2024 (928th). Its steady placement within the 900–960 rank range suggests a stable niche appeal for parents seeking a name that balances distinctiveness with intuitive pronunciation.