The sinister air was there always, though the pups never discovered its cause.

He had a sinister air about him.

Kinshasa had the sinister air of Mogadishu in '91.

There was a sinister, not quite natural air about them.

But when bragging becomes competitive, making parents feel as if they are being drawn into a game of one-upmanship, it takes on a sinister air.

On this, amongst the few trees growing there, stood a low dark building which, in the fading light, had a desolate, sinister air.

Many critics detect a sinister air in the work.

The man had a sinister air and did not act friendly.

The houses there had a sinister air in the midst of their dirt and decay.

The temple as a whole did not possess the sinister, grim air of a place where many lives had been sacrificed.