Noble and beautiful
A compound name combining Ada, meaning noble, and Belle, meaning beautiful. It emerged in the 19th century during the Victorian era's fondness for elaborate, feminine portmanteaus. While it shares the 'noble' roots of Adelaide, it offers a more whimsical, melodic alternative.
Less common today
Adabelle isn't in the latest US Top 1000. It last peaked at #4,430 in 2013.
US births per 5-year period, 1990βpresent (SSA data).