ಅರ್ಥ : Without warning or announcement.
ಉದಾಹರಣೆ :
They arrived unannounced.
A totally unheralded telegram that his daughter...died last night.
ಸಮಾನಾರ್ಥಕ : unannounced, unpredicted
Unheralded meaning in Bengali (Bangla).