LOOM v. 2 definitions
o appear above the surface either of sea or land, or to appear enlarged, or distorted and indistinct, as a distant object, a ship at sea, or a mountain, esp. from atmospheric influences; as, the ship looms large; the land looms high. Awful she looms, the terror of the main. H. J. Pye.
MUMBLE v.
sed, so as to render the sounds inarticulate and imperfect; to utter words in a grumbling indistinct manner, indicating discontent or displeasure; to mutter. Peace, you mumbling fool. Shak. A wrinkled hag, with age grown double, Picking dry sticks, and mumbling to herself. Otway.