"Mussitate" is a seldom-used word that means to mutter or whisper softly. Some synonyms for mussitate include murmur, mumble, whisper, mutter, and drone. A person may mussitate when they are speaking softly so as not to be heard by others, or when they are lost in thought and talking to themselves. Other synonyms that have similar meanings to mussitate include susurrate, rustle, and whish. These words are all different ways to describe the sound of quiet speech or movement, and can be useful when describing the sounds of a quiet conversation or a peaceful forest scene. So, it is important to have a good understanding of synonyms to expand our knowledge and vocabulary.