The term in-appositeness refers to the lack of relevance or appropriateness. This word can be a mouthful and may not be commonly used in daily discussions. Some synonyms for in-appositeness include irrelevance, incongruity, inappropriateness, unsuitability, and impropriety. These words are useful for expressing that something is not suitable or appropriate for a particular context. For example, an inappropriate joke at a funeral can be described as an impropriety. Similarly, irrelevant information in a presentation can be labeled as an in-appositeness. These synonyms can help make your communication more effective and efficient by condensing and simplifying complex terms.