adj : threatening or foreshadowing evil or tragic developments; "a
baleful look"; "forbidding thunderclouds"; "his tone
became menacing"; "ominous rumblings of discontent";
"sinister storm clouds"; "a sinister smile"; "his
threatening behavior"; "ugly black clouds"; "the
situation became ugly" [syn: baleful, forbidding, menacing, minacious, ominous, sinister, threatening, ugly]