Likely a modern American blend of Nadia and Lynn.
Naidelyn is a contemporary American invention, most likely created by combining the Slavic name Nadia, meaning 'hope', with the popular suffix -lyn, meaning 'lake' or 'water'. It is particularly favored within Spanish-speaking communities in the United States, following a trend of melodic, multi-syllabic feminine names.
Less common today
Naidelyn isn't in the latest US Top 1000. It last peaked at #1,957 in 1998.
US births per 5-year period, 1990βpresent (SSA data).