Adalyn is a modern American spelling combining the medieval names Adelaide (Germanic adal, "noble") and the suffix -lyn (Welsh, "lake" or just euphonic). The result is a contemporary girl's name that sounds traditional but is genuinely new.
Adalyn entered the U.S. top 1000 in 2008 and has risen rapidly into the top 100. Adalynn (with two N's) is also in the top 100. The wave is part of the broader return of -lyn names (Adalyn, Brooklyn, Madelyn, Evelyn).
Adalyn does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
—
—
In Pythagorean numerology the letters of Adalyn reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.