Here is a list of nouns that start with MU.

mucilage, muck, mucker, mucosa, mud

mudguard, mudslinging, mudwagon, muezzin, muff

muffler, mug, mulch, mule, mullah

mulling, multifigure, multimillionaire, multipactor, multiplication

multiplicity, multistage, multitude, multiversity, mumble

municipality, mural, murder, murderer, murmur

muscle, musclemen, musculature, muse, museum

mushroom, music, musical, musicality, musician

musicianship, muskadell, musket, must, mustache

mustard, muster, mutilation, mutineer, mutiny

muttering, mutton, mutuality, muzzle

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