The phrase "whispered about" can be replaced with a myriad of synonyms that convey a similar meaning. Some examples include "gossiped about," "rumored," "talked about in hushed tones," "subject to speculation," "discussed behind closed doors," "murmured about," "chattered about in secret," "suspected," "whispered behind closed hands," and "the subject of whispers." Each of these alternatives adds a slightly different nuance to the original phrase, but all of them suggest that something or someone is the subject of private conversation or gossip. Choosing one of these synonyms can bring variety and depth to writing and help to avoid repetitive or cliched language.