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You are viewing the etymology of um meaning: (Article) A (the indefinite article).A (the indefinite article).. You may also see other Indo-Portuguese etymologies of um.
Indo-Portuguese word um comes from Proto-Indo-European *yo-, Proto-Indo-European *oynolos, and later Proto-Italic *oinos (One.).

Um etymology ?

Um detailed word origin explanation

Dictionary entryLanguageDefinition
*yo- Proto-Indo-European (ine-pro)
*oynolos Proto-Indo-European (ine-pro)
*óywos Proto-Indo-European (ine-pro)
*oinos Proto-Italic (itc-pro) One.
oinos Old Latin (itc-ola) (cardinal) one.
unus Latin (lat) Alone. One, single (cardinal) one; 1 (Medieval Latin) a, an.
ũu Old Portuguese (roa-opt) Masculine singular indefinite article; a; an.
um Portuguese (por) The figure or digit "1": one. (with uncountable nouns) a bit of. (indefinite) a, an. (in the plural) some; a few (a small number of). (usually in the feminine, pronounced slowly, emphatically and with a high intonation) indicates that what follows is exceptional; quite a; quite the Element(s) of a previously mentioned class: one; some (in plural).. a person; one; someone one.
um Indo-Portuguese (idb) A (the indefinite article).

Words with the same origin as um

Descendants of *yo-