This was not the first time the Administration has expressed its concerns on needle-exchange programs but it was the most vigorous and direct criticism so far.

Despite vigorous public criticism of the 'closed' shops, they continue to operate.

Likewise, among academics, Fish has endured vigorous criticism.

Both studies triggered vigorous criticism from longtime Internet users and some social scientists.

The new study has garnered frightening headlines and vigorous criticism.

All the speakers at the symposium had expected vigorous criticism from the audience of anthropologists, but were surprised to encounter few strongly negative comments.

It's these sources, more than the exhibit, that deserve the most vigorous and urgent criticism.

Their policies were subjected to vigorous public criticism.

At 23 he came into prominence by a vigorous criticism of Thomas Hobbes' theory on civil power.

At the 35-nation gathering, he voiced vigorous criticism of Eastern bloc nations on human rights.