Hums haw is an informal expression used to describe someone who is hesitant or indecisive about something. It is often used to refer to someone who is struggling to make a decision or express their thoughts clearly. However, there are many synonyms for hums haw that can be used instead. Some examples include dither, vacillate, falter, waver, hesitate, and equivocate. Each of these words can be used to describe the same type of behavior, but may also have slightly different connotations depending on the context. By using a variety of synonyms, individuals can more accurately describe the behavior they are observing.