Dawn arrived with unexpected swiftness.

The end of the struggle came with unexpected swiftness.

Donner, with unexpected swiftness, stuck out a leg and tripped me.

With sudden and unexpected swiftness, it dashed toward the terror-stricken girls.

He could feel the storm at his neck, tumid, angry, coursing overland with unexpected swiftness.

Yet he moved easily and with unexpected swiftness.

He turned around with unexpected swiftness.

As it was, matters were brought to a head with unexpected swiftness.

In 1959, feeling pressured by the unexpected swiftness of his rise to fame, Rollins took a three-year hiatus to focus on perfecting his craft.

Now that all action was over and his fate taken out of his hands with unexpected swiftness, Mr Verloc felt terribly empty physically.