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Home › Baby Names Directory › Declyn

Declyn

♀ Girl

Pronounced DEK-lin /ˈdɛk.lɪn/High

Meaning: A -yn spelling of Declan — from the Irish Deaglán, traditionally 'full of goodness'; predominantly a boys' name; here for girlsLow

In 30 seconds: Full of goodness: Declyn spells Declan — 'full of goodness'. Crisp, modern, and warm. Used for both sexes (here for girls).
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Origin LowIrish
MeaningA -yn spelling of Declan — from the Irish Deaglán, traditionally 'full of goodness'; predominantly a boys' name; here for girls
U.S. rank (2025)#6607 ↘ Falling
2025 U.S. births17 girls (0.00% of U.S. girls)
Peak year2018
Total births (all-time)≈ 307

Popularity in the U.S. · SSA data

peak 201820042025

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Declyn is a -yn spelling of Declan — from the Irish Deaglán, traditionally understood as 'full of goodness' (the exact root is debated; St Declan was an early Irish missionary; routes layered, which we note). A crisp, modern name, predominantly boys', used here for girls (slug distinguished; nickname Dec).

It registers thinly for girls. Rare for girls, full-of-goodness at the (traditional) root, and crisp.

Did you know? Declan (Deaglán) is traditionally read as 'full of goodness' — an early Irish saint — Declyn is a -yn spelling, crisp and modern, predominantly boys', here for girls (the routes are layered, which we note).
Overall data confidence 50%
Behind the Name — Declan — root debated

Variations

DeclanDeclynDeaglán

Nicknames

Dec

Famous Bearers

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If you like Declyn…

Declan— the standard form
Delaney— a fellow Irish girls' name
Dylan— a companion unisex Celtic name
Devyn— a fellow Irish choice
Aryn— another Irish name

Explore names like Declyn

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Frequently Asked

What does the name Declyn mean?

Declyn spells Declan — Irish, traditionally 'full of goodness'; the root is debated.

How do you pronounce Declyn?

It's said DEK-lin /ˈdɛk.lɪn/ — two syllables, stress on the first.

Is Declyn a boy or girl name?

Declyn is used for both sexes (predominantly boys'); this page covers its use as a girl's name.

How popular is Declyn?

Declyn is rare for girls in the U.S.

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