German diminutive of Adelaide meaning noble; also a Welsh name from 'addaf' meaning beautiful.
Adda wears its elegance lightly. As a variant of Ada, it draws from the Old High German element adal, meaning "noble" — the same root that anchors Adelaide, Adeline, and Adele. But Adda has its own distinct profile, appearing in Welsh records as a feminized form of Adam (from the Hebrew adamah, "earth"), giving the name a surprising dual heritage: both the aristocratic glitter of Germanic nobility and the earthy humility of the first man of scripture.
The name's most luminous historical bearer is arguably Ada Lovelace — daughter of Lord Byron, collaborator of Charles Babbage, and widely credited as the world's first computer programmer — whose shadow extends gracefully over all her near-namesakes. Adda itself appeared with some frequency in Wales and northern England through the nineteenth century, where the Welsh Adam-connection made it feel biblically grounded rather than merely decorative. In Welsh genealogical records, Adda ap Beli and similar constructions appear as far back as medieval times, suggesting the name's roots in that culture run deep.
By the early twentieth century Adda had drifted into the quieter registers of given-name fashion, overshadowed by the sleeker Ada and the more elaborate Adeline. That obscurity is now its charm. In an era when parents hunt for names that feel both antique and unhackneyed, Adda offers two crisp syllables with centuries of layered meaning — noble, earthbound, and waiting to be rediscovered.