"papal envoy, permanent diplomatic agent representing the Pope at a national capital," 1520s, from older Italian nuncio (now nunzio), from Latin nuntius "messenger," from PIE root *neu- "to shout."
Entries linking to nuncio
*neu-
Proto-Indo-European root meaning "to shout." It forms all or part of: announce; denounce; enunciate; nuncio; pronounce; renounce.
It is the hypothetical source of/evidence for its existence is provided by: Greek neuo "to nod, beckon," Latin nuntius "messenger," Old Irish noid "make known."