Definition: Impaternate is a term in linguistics and morphology that refers to a morpheme that does not have a direct meaning or function, but rather serves as an auxiliary particle for other words. This type of morpheme is often used in conjunction with other morphemes to create a more complex sentence structure. The impaternic morphemes are typically found at the end of a word and are not part of any grammatical structure. For example, in the sentence "The cat sat on the mat,"