unheard

/ʌnˈhɜrd/
adjective
  1. Not heard or listened to; ignored or disregarded.
    • The voices of the protesters were unheard by the government officials.
    • In the noisy room, his quiet plea for help remained unheard.
    • Her complaints about the unfair treatment went unheard by the manager.
  2. Not having been heard before; unprecedented or unknown (usually in the phrase 'unheard of').
    • It was unheard of for a student to skip class without permission.
    • Such a large donation from a single person was almost unheard of in the town.
    • The idea of working from home was unheard of twenty years ago.
Antonyms
What does "unheard" mean? | whatsthatwordmean | whatsthatwordmean