Of or pertaining to an omen or to omens; being or exhibiting an omen; significant; portentous; -- formerly used both in a favorable and unfavorable sense; now chiefly in the latter; foreboding or foreshowing evil; inauspicious; as, an ominous dread.
What is ominous is the ease with which some people go from saying that they don't like something to saying that the government should forbid it. When you go down that road, don't expect freedom to survive very long. Thomas Sowell
The past is an old armchair in the attic, the present an ominous ticking sound, and the future is anybody's guess. James Thurber
Americans have discovered the fragility of life, that ominous fragility that the rest of the world either already experienced or is experiencing now with terrible intensity. Jose Saramago
Materialism has never been so ominous as now in North America, as management takes over. Arthur Erickson
Every nation feels itself to be superior, but in America it's a jaunty feeling, and in some cases a rather ominous one among the super-patriots. James Salter