Heads would assume increasingly ominous significance in Wilmarth's work.

The highway signs assumed a new and ominous significance now.

To them, the name had ominous significance.

In light of that, his death took on a new and ominous significance.

The date was Friday the 13th, which began to take on ominous significance.

An hour before, his statement would have impressed me as mere theorizing, but now it assumed an ominous and terrifying significance.

The ominous significance of the eight beasts is often illustrated in rhyme.

I mention the year because it had an ominous significance of its own, as I shall explain later.

The lower darkness, like the blackening sky above, seemed fraught with ominous significance.

An event that was merely a footnote five years ago has now, in our post-9/11 world, assumed a fresh and ominous significance.