dégun

from Latin nec unus via Vulgar Latin *negusFranco-Provençal dictionary, S. J. Honnorat, 1846, the Roman degunLexique Roman or Dictionary of the Language of the Troubadours Compared with Other Languages of Latin Europe, M. Reynouard, 1838, p. LVII, then Occitan degunÉva Buchi, Borrowings in the Dictionary of French Regionalisms (offprint). The Latin etymon gives ninguno in Spanish, nessuno in Italian, ningú in Catalan, ninguém in Portuguese, etc. The change from /n-/ to /d-/ occurs by dissimilation in Occitan, in Leonese, and is observed in Old SpanishG. Rohlfs, Le Gascon. Études de philologie pyrénéenne, Tübingen, Max Niemeyer Verlag. probably under the influence of prepositions or negations nen nengun, sin nengunÅ. W. Munthe, Vermischte spanische Beiträge, in Zeitschrift für romanische Philologie, 15 (1891), p. 228-232.