My elite readers no doubt know this word, but I learned it just today. It means lack of suitability or congruity: INELEGANCE. 'Concinnity' is also a word. From the Latin concinnitas, from concinnus, skillfully put together, it means: harmony and often elegance of design especially of literary style in adaptation of parts to a whole or to each other. (Webster's New Collegiate, 1977, p. 234.)
Never allow a word to escape your comprehension. If you encounter a word you don't know, write it down and look it up. Keep a list of words and definitions in a notebook you regularly consult. It might be an online notebook like this one. Having written this post, 'inconcinnity' is a word I am not likely to forget. For there is nothing I write on this weblog that I do not reread, with pleasure, many times.