Bumbler is a term associated with someone who is clumsy, inept, or inefficient. However, there are many other words that can be used to describe a bumbler. Some synonyms for bumbler might include terms like fumbler, goofball, klutz, or stumblebum. These words all capture the sense of someone who is awkward, uncoordinated, or bumbling in their actions. Other possible synonyms might include words like hapless, ineffectual, or ineffective, which convey a sense of helplessness or incompetence. Whether describing someone's physical abilities or their general level of competence, there are many words that can be used to replace bumbler and capture the same sense of awkwardness or ineptitude.