Variant of Adeline, from Germanic 'adal' meaning 'noble.'
Addeline is a variant of Adeline, itself a French diminutive of the Germanic root name Adel or Adela, built on the Old High German element "adal" meaning noble. This noble-lineage root gave rise to an entire family of names — Adelaide, Adelheid, Adele, Adela, Adaline — that spread across medieval Europe carried by Frankish and Norman nobility. Saint Adeline of Savigny, a twelfth-century Benedictine abbess in Normandy, kept the name in ecclesiastical use, while the aristocratic associations kept it in royal and noble circles.
Adeline's most enduring popular-cultural footprint in the English-speaking world came through the barbershop standard "Sweet Adeline (You're the Flower of My Heart)," written in 1903 and sung with such frequency that it became a touchstone of nostalgic Americana — Adeline as the archetypal girl next door, warm and beloved. The Addeline spelling, with its doubled 'd,' is a modern orthographic variant that emphasizes the name's first syllable and gives it a slightly more substantial visual weight on the page. In contemporary naming, Adeline and its variants have enjoyed a sustained revival as part of the broader appetite for Victorian and Edwardian names that feel both antique and fresh.
It sits comfortably alongside Eveline, Emmeline, and Madeline in the -line register — names with rhythm, femininity, and historical depth. Addeline in particular reads as a personalization, a way to make an established name feel like a deliberate, individual choice rather than a trend selection. The name shortens warmly to Addie, a nickname with its own well-worn affection.