More precise label: adjective derived from the past-participle form of the verb “whisper”.
Translations
The whispered conversation was barely audible.
Шепчущий разговор был едва слышен.
Definitions
Spoken in a soft, hushed, or low voice, often to avoid being overheard. The whispered conversation between the two friends was barely audible in the quiet room.
Characterized by or resembling a whisper; faint or subtle. The whispered breeze through the trees created a calming atmosphere in the garden.