Noble
Adalin is a modern variant of the Germanic name Adeline, which is a diminutive of Adele. It ultimately derives from the Old High German word 'adal', meaning noble or nobility. While less common than its counterparts Adeline or Adalyn, it retains the same sophisticated heritage.
Less common today
Adalin isn't in the latest US Top 1000. It last peaked at #3,842 in 2016.
US births per 5-year period, 1990βpresent (SSA data).