dieselbederselbedasselbe

Dieselbederselbedasselbe is a coined German neologism that circulates mainly in online language communities and memes. It is not part of standard dictionaries and serves as a playful example of linguistic redundancy. The word is built by combining the term diesel with a sequence of German forms that all express sameness: derselbe, dasselbe, selbe. The result is an extended, tongue-in-cheek compound intended to mock or highlight excessive repetition in German.

Origin and formation are informal. The precise place and date of its initial coinage are unclear, but it appears in forums, comment threads, and social-media posts from the 2020s as a humorous demonstration of how German can stack related meanings into one long word. The diesel element carries no fixed semantic load here; it functions mainly as a memorable, comic prefix that reinforces the novelty of the construction.

Usage and meaning are likewise playful rather than prescriptive. The term is typically used to signal that something is not merely the same as before, but the same in an exaggerated or almost absurd degree. It can function as a self-referential joke about redundancy or as a parodic example in discussions about German word formation and compounding. Because it is a nonce word, it usually relies on the surrounding context for interpretive clarity and is understood mainly within playful or humorous discourse.

See also tautology, reduncy, German compound words, linguistic humor.