The etymology is completely distinct tho, not a cognate.

From Old Irish duilesc (compare Scottish Gaelic duileasg), from Proto-Celtic doliskos, duliskos (compare Welsh delysg), from Proto-Indo-European dʰelh₁- (“to bloom, be green”) (compare duille (“leaf”)).

Whereas Latin 'dulcis' comes from PIE dl̥kús ("sweet")

Actually probably cognate with Latin 'folium' (Italian foglia, French 'feuille'). EDIT: Actually no. Not sure there's a Latin cognate at all; the dʰelh₁ PIE doesn't seem to have evolved to "Leaf" in Latin and the Greek word for "bloom" was borrowed instead? Something like that.

Yeah see my edit, it seems clear to me that the bʰleh₃- is the origin, and Latin never got the dʰelh₁- derivation.

It sounds OK to me if dʰelh went through some thenanigans to Latin. Fun fact: zelen is one of common roots in Slavic languages for green/leafs.

Comparing this other comment:

> Note that phonetically dulce in NI would be pronounced "dulis."

is interesting in that the modern pronunciation looks much closer to the ancient pronunciation than the modern spelling is to either. What happened?

I am not an Irish (or any kind of Celtic) speaker but orthography for those languages looks absolutely crazy to me. Both Welsh and Irish / Scottish Gaelic look like languages that might have benefited from their own alphabet, or at least the addition of some diacritical marks.

We also have no real idea how proto-Celtic or even Gaulish or early old Irish would have been pronounced. Only best guesses. We have inscriptions in e.g Gaulish from Roman times but they look to me suspiciously Latinized.

And then look at English.. it's a mismash of a bunch of different orthograpic conventions -- Anglo-Saxon, Norman French, Nordic, Latin, Greek... and makes no sense. Even us native speakers have no absolute certainty how to pronounce a word they've never seen before.

I'll give you that /θ/ is pronounced [s] by the majority of the Spanish speaking world, but it's definitely "dulce" and not with s.

My fault, I wrote it with an 's' just because I looked for the seaweed around and I found it written as 'dulse'. I in fact don't pronounce it with the 's'. :P :D

Note that phonetically dulce in NI would be pronounced "dulis."

West coast of Clare we call it Dilisk. Pronounced, more or less, dilishk.

My mom came from the West coast of Mayo and called it Dilisk (dilishk).

universal name: Palmaria palmata

In Waterford we call it Dilisk with a normal S.

In romanian it's the same; but it can also mean "fresh" in the context of dairy. It's the same in Spanish?

> It's the same in Spanish?

not. Dulce means sweet or candy in Spanish, but not fresh