looming

(verb) come into view indistinctly, often threateningly. Synonyms: loom. Example: "Another air plane loomed into the sky."

(verb) appear very large or occupy a commanding position. Synonyms: loom, tower, predominate, hulk. Examples: "The huge sculpture predominates over the fountain." "Large shadows loomed on the canyon wall."

(verb) hang over, as of something threatening, dark, or menacing. Synonyms: brood, hover, loom, bulk large. Example: "The terrible vision brooded over her all day long."

(verb) weave on a loom. Synonyms: loom. Example: "Materials loomed in egypt."