Likely a modern variant of Kiara meaning dark or clear
Keiaira is a modern American invention, likely created as a phonetic elaboration of Kiara or Keira. Depending on the intended root, it may derive from the Irish 'Ciar' meaning dark-haired or the Italian 'Chiara' meaning bright and clear. Its unique spelling reflects a contemporary trend of adding vowels for a more melodic sound.
Less common today
Keiaira isn't in the latest US Top 1000. It last peaked at #8,652 in 1993.
US births per 5-year period, 1990βpresent (SSA data).