"Gumby" is a slang term used to describe someone who is considered to be clumsy or inept. However, there are several synonyms for this word that can be used depending on the context. One synonym is "klutz," which refers to someone who is always tripping, falling, or dropping things. Another synonym is "bungler," which refers to someone who is not very good at a particular task or activity. A third synonym is "amateur," which refers to someone who is inexperienced or unskilled in a particular area. Other synonyms for "gumby" include "inept," "awkward," "clumsy," "uncoordinated," and "bungling." These words can be used to describe someone who is not very skilled or graceful in their movements or actions.