Trying to answer that thorny question was where I ran into problems.

Then there is the thorny question of how to help people slim down.

Throughout the evening, however, the thorny questions were never addressed.

When to stop such monitoring is a thorny question for health officials.

Future studies need to address many thorny questions about when to start combination treatment.

It's a thorny question, particularly for those of us whose job it is to do just that.

But there are many thorny questions that have to be decided before then.

The thornier question is whether Americans will agree to leave room for government to spend money on anything else.

A father recently put a thorny question to the authors.

Some of the thorniest questions in the matter concern that list.