Flumadiddle is a whimsical and funny term that is often used to describe a statement or story that is considered to be absurd or nonsensical. It is a peculiar term that is rarely used in everyday conversation. For those who find themselves using this word on a regular basis, it may be helpful to know some synonyms that can be used interchangeably with flumadiddle. Some of the words that can be used instead of flumadiddle include balderdash, poppycock, twaddle, hogwash, bunk, claptrap, nonsense, and gibberish. These words can be helpful when trying to express that something is untrue or ridiculous, without using the same term repeatedly.