multiply

But for a stressed tree its natural defences are reduced and the beetles start to multiply.

The booth-oriented Web sites multiplied when their creators saw the phone on other sites and--after calling numerous times--decided to document their own pilgrimages to the desert phone.

If those nine go about their lives in public spaces, numbers multiply exponentially.

"None of the bowlers seemed to be able to calm themselves down and it multiplied," former England bowler Steve Finn told BBC Two.

"Because of our activism, the targeting by authoritarian regimes against us has multiplied... my wife and I have no choice but to seek asylum in the UK."