"Uncleanlier" is a comparative form of the adjective "unclean," meaning dirtier or less pure. Its spelling follows a common rule in English where "-er" is added to adjectives to indicate a comparative form. The IPA transcription of "uncleanlier" is /ʌnˈkliːnliər/. It's pronounced as "uhn-kleen-lee-er", with primary stress on the second syllable. Despite being a valid word, it is not commonly used and can be replaced by simpler phrases like "more unclean."
There doesn't appear to be a specific word "uncleanlier" in the English language. It seems to be a combination of "unclean" and the comparative suffix "-lier" added onto it. The word "unclean" comes from the Old English "unclǣne", derived from "un-", meaning "not", and "clǣne", meaning "clean". The suffix "-lier" is used to form comparative adjectives in English. So, "uncleanlier" would typically mean "more unclean" or "less clean". However, it is worth noting that "uncleanlier" is not a commonly used word.