At first it was just a tremor, but it swiftly escalated into shudders that rattled her entire body.

The confrontation swiftly escalates, leading to a cordon by the police.

Her sobs swiftly escalated into open cries of panic and a thrashing of all of her limbs that doubled and the tripled the speed at which they were moving.

Her book begins as a denunciation of pornography and swiftly escalates into an all-out attack on the First Amendment.

But being cherished didn't mean he thought her fragile, and their lovemaking swiftly escalated into a ferocious tumble.

When William Shakespeare emerges from the palace, the philosophical tension between the two titans escalates swiftly until they almost come to blows.

I believe that a new phase has begun and that it is going to escalate swiftly from now onwards.

Beyond the shelter of the trees, the storm swiftly escalated into a full-scale blizzard.

Cancellation penalties on excursion fares swiftly escalated until they reached a confiscatory 100 percent level.

The situation swiftly escalated as the DRV deployed heavy gunboats and torpedo equipped frigates to observe the U.S. maneuvers.