Where does “omelette-y” come from?

omelette-y (English) comes from English omelette, from French omelette, from French alemette, from French alemelle, from Latin lāmella, from Latin -lus, from Proto-Italic -elos, from Proto-Indo-European -e-lós — Forms agent nouns from verbal roots.

Ancestry of “omelette-y”, step by step

omelette-y traces back through two separate lines of ancestry.

via English omelette

StepLanguageWordMeaning
1EnglishomeletteA dish made with beaten eggs cooked in a frying...
2Frenchomeletteomelette
3Frenchalemette
4Frenchalemelleknife blade
5LatinlāmellaA small, thin plate of metal
6Latin-lusAlternative form of -ulus; diminutive suffix
7Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
8Proto-Indo-European-e-lós
9Proto-Indo-European-lósForms agent nouns from verbal roots

via English Y

StepLanguageWordMeaning
1EnglishYA figure or mark in the shape of the letter Y; A...
2EnglishyuriA narrative or visual work featuring a romance or...
3Japanese百合lily
4Japanese連用形an inflectional category: the continuative or...
5Japanese見るto see, to watch, to observe, to look at...
6Japanesea dream; a vision; leaving reality to the state...
7Old Japanesea dream
8Japanesean order in biology: smaller than a class, bigger...
9Middle Chinese
Every word from Proto-Indo-European -lósEvery word from Latin -lusEvery word from Latin lāmella