When someone speaks in a low, hushed voice, it is often associated with whispering. However, there are many synonyms for this word that can convey a similar meaning. Some other terms that are similar in definition to whisperingly include murmuring, muffled, hushed, soft-spoken, and low-toned. These words all suggest a quiet or subdued manner of speaking, often used to impart a sense of secrecy or intimacy. Depending on the context, one of these alternatives may be more appropriate than another. However, all of them convey a similar sense of speaking in a manner that is meant to be heard only by a select few.