Whispered Summons is a term used to describe a subtle call to action, usually in the form of a quiet request or invitation. It is often used to refer to a situation where someone needs to be discreetly summoned or asked to do something without drawing attention to themselves. The term is derived from the word 'WHISPER, ' which implies a quiet and secretive nature. PSST is an onomatopoeia that is used to represent a WHISPER, further emphasizing the subtlety of the summons.