According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern UJAM---. That is, seven letter words with 1st letter U and 2nd letter J and 3rd letter A and 4th letter M. In alphabetical order, they are: ujamaas
Things that start with the letter U include:U-boatudder(anything that is described as ugly)umbrellaunicodeuniformunitUnityuniversal symboluniversityupper denturesurban areaurineurinal (male place to urinate)urnUSSR - Russiauseful itemsutility knifeUtopiauvula (body part)