What does aviso mean?
An aviso is an official communication — a notice, dispatch, or warning sent to convey information of consequence, often in diplomatic, governmental, or military contexts. The word entered English from Spanish and Portuguese, where it means advice or notice, and it carries a distinctly formal, old-world flavor in modern usage; most contemporary readers will encounter it in histories of naval operations or international correspondence. In maritime history, an aviso also referred to a small, swift vessel assigned to carry dispatches between fleets or ports, valued for speed rather than firepower — a role later filled by dedicated dispatch boats. Because the related Romance-language words remain in daily use abroad (as the common term for a notice or announcement), "aviso" serves as a useful reminder of how deeply English vocabulary for counsel and communication is intertwined with Latin roots shared across European languages. Writers today deploy it mainly for historical accuracy or deliberate elegance.
An official notice, dispatch, or warning conveying important information.
"An urgent aviso reached the embassy hours before the treaty was signed."
Historically, a small, fast ship used by a navy to carry dispatches or conduct reconnaissance.
"The admiral dispatched his fastest aviso to carry news of the victory back to port."
This nautical sense is now obsolete, surviving mainly in historical accounts of 17th- to 19th-century naval warfare.
The standard English plural simply adds -s; older texts occasionally show the foreign-style plural "avisoes," but this form is now archaic.
"The archives contain dozens of avisos exchanged between the two courts during the negotiations."
Before radios and satellites, navies relied on swift little ships called avisos literally named for the 'notices' they carried across the seas.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of aviso
"Aviso" comes from Spanish and Portuguese aviso, meaning notice or warning, which derives from the Vulgar/Late Latin expression ad visum — roughly 'according to what has been seen' — the same source that gave English "advice" and "advise" via Old French. The word was borrowed into English around the early 17th century, first in the sense of an official notification and shortly afterward applied to the fast vessels that carried such notifications at sea. Its closest English relatives are "advise," "advice," and "advisory," all descendants of the same Latin root visum ('a sight').
How aviso is actually used
"Aviso" is a formal, literary word in modern English and is now rare outside historical writing about diplomacy and naval affairs. In Spanish- and Portuguese-speaking countries, its cognate remains the ordinary word for a notice or warning, so bilingual readers may encounter it more frequently. The plural is typically anglicized as "avisos," though the Italian-influenced plural "avisoes" appears in older texts.
Easily confused with aviso
"Advice" is the everyday English word for guidance or a recommendation, while "aviso" is a rare, formal term for an official notice or dispatch (and historically a type of naval vessel), borrowed directly from Spanish and Portuguese.