say it: uhn-HER-uhl-did
unheralded is an adjective meaning "without warning or announcement". It carries one recorded sense.
without warning or announcement
“they arrived unannounced”
“a totally unheralded telegram that his daughter...died last night”
Definitions, synonyms and semantic relations for unheralded come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.