Life or bird
Avaiyah is a modern phonetic elaboration of names like Ava or Aliyah. It likely draws its roots from the Hebrew 'Chava', meaning life, or the Latin 'avis', meaning bird. Its usage is part of a contemporary trend of adding melodic suffixes to established short names.
Less common today
Avaiyah isn't in the latest US Top 1000. It last peaked at #5,152 in 2020.
US births per 5-year period, 1990βpresent (SSA data).