The antimatter proved too volatile and unpredictable to be useful.

Political circumstances in France proved too volatile to allow the completion of the painting.

About 9,000 such inmates are now in cells with less violent offenders, he said, in a mix that has proved volatile.

Because genomics stocks have proved so volatile, he recommended that investors invest in a variety of companies across the entire sector.

Public housing officials around the country say the mix of fragile older people and younger people with mental disabilities has proved volatile.

Because their trades can quickly turn south, hedge-fund returns can prove extremely volatile.

Share prices of soccer franchises have proved wildly volatile.

Senate elections have proved more volatile than any others in recent cycles.

Since then the market in Eurotunnel shares has proved volatile although their price has always remained above the opening level.

The chemistry between the two companies has proved volatile, though, and their partnership is scheduled to end next year.