Emily Watson, playing Leach, came into her own as her character took on a more morally ambiguous role.

Vincent Mangematin has been underlying the ambiguous roles of scientific and human capital in high tech organization.

The story deals with the seemingly contradictory and morally ambiguous role of the soldier as both victimizer and victim.

Some say their ambiguous role in Iraq now makes combat more difficult.

But now, the US can and should start playing the less ambiguous role it took on, as of Thursday night.

Jock Soto made something meaningful of an ambiguous role .

Unless the Training Authority backed its proposals with hard cash, it found itself drawn increasingly into the market in a rather ambiguous purchase/supplier role.

But from the beginning he has played his most ambiguous roles while singing with his band.

Their church plays an ambiguous role in the war.

Louis Leakey played a particularly ambiguous role.