Main entry: ill, inauspicious, ominous
Definition: presaging ill fortune
Usage: ill omens; ill predictions; my words with inauspicious thunderings shook heaven- P.B.Shelley; a dead and ominous silence prevailed; a by-election at a time highly unpropitious for the Government
Main entry: threatening, baleful, ominous, minacious, minatory, sinister, menacing, forbidding
Definition: threatening or foreshadowing evil or tragic developments
Usage: 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