Combination of the prefix De and the name Kayla
Dekayla is a modern American invented name. It follows a 20th-century naming trend of adding the popular 'De-' prefix to established names like Kayla, which itself derives from the Hebrew name Kelila, meaning 'crown of laurel'.
Less common today
Dekayla isn't in the latest US Top 1000. It last peaked at #5,776 in 2001.
US births per 5-year period, 1990βpresent (SSA data).