köken: From Old French alcun, from Vulgar Latin *alicunus, from Latin aliquī + unus. Cognate with Italian alcuno, Spanish alguno, Galician algún, Portuguese algum.
köken: Inherited from Late Latin nec ūnus (“not even one”). Compare Old French neisune, Italian nessuno and nissuno (Tuscan), Neapolitan nisciuno, Friulian nissun, Dalmatian nenčoin, Istriot ningun, Romanian niciun, Portuguese nenhum, Catalan ningú. By surface analysis, ni + uno.
köken: From Middle Dutch negeen, ne gene, (also as engheen, en geen), from Old Dutch chein, ghein, nehein (“not one; none”), ultimately corresponding to Proto-Germanic *nehw ainaz (“nor one”). Compare German kein, Yiddish קיין (keyn), English none.
aile: geen van alle, geeneens, geenszins, generlei
köken: From Old Galician-Portuguese nin (h)ũu, earlier nen (h)ũu, from Late Latin nec ūnus (“not even one”). Displaced the collateral form ningũu. Compare Galician ningún, Spanish ninguno.
köken: Inherited from Vulgar Latin capus (“head, chief”), from Latin caput (“head, etc.”), from Proto-Italic *kaput, ultimately from Proto-Indo-European *kauput-, *káput. Compare Occitan cap. Compare also French personne (which can mean either "person" or "nobody").
aile: al cap de, al cap i a la fi, cabut, cap d'any, cap d'ase, cap d'estat, cap de colla, cap de setmana, Cap Verd, cap-roig
köken: Already attested as ningũu in the 13th century (Cantigas de Santa Maria), from Old Galician-Portuguese niun, from Late Latin nec ūnus (“not even one”). Cognate with Portuguese nenhum, Spanish ningún.