Adelyne is a variant of Adeline, the French diminutive of Adele, which comes from the Germanic word adal and means "noble" or "of noble kind". The -lyne ending gives the old French name the look of modern favorites like Evelyne and Madelyne. Adelyne peaked at number 2,071 in 2018, when Adeline and Adalyn were at their height, and ranks number 2,691 in 2025, with 64 births.