Where does “mergullar” come from?

mergullar (Old Portuguese) comes from Vulgar Latin merguliare, from Latin mergulus, from Latin -ulus, from Proto-Italic -olos, from Proto-Italic -elos, from Proto-Indo-European -e-lós, from Proto-Indo-European -lós — Forms agent nouns from verbal roots.

Ancestry of “mergullar”, step by step

StepLanguageWordMeaning
1Vulgar Latinmerguliare
2Latinmerguluswick of a lamp; small diver, loon
3Latin-ulusUsed to form a diminutive of a noun, indicating...
4Proto-Italic-olos
5Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
6Proto-Indo-European-e-lós
7Proto-Indo-European-lósForms agent nouns from verbal roots

Words derived from “mergullar

Every word from Proto-Indo-European -lósEvery word from Latin -ulusEvery word from Latin mergulus