Meaning & Origin
Addalyn is a girl's baby name of German origin, a variant of Adalyn, from the Old High German Adal meaning 'noble' with the -lyn suffix added for a modern feminine finish. The extra D in the spelling gives it a slightly more distinctive visual identity.
About 3,002 U.S. births are recorded. Addalyn is for parents who love the Adalyn/Adaline sound but want a spelling that stands out — the double-d making it immediately identifiable on paper.