"We walked away from that feeling guardedly optimistic," he said.

Other scientists familiar with the experiments are guardedly optimistic about the chance of success.

Other executives who are Microsoft competitors said they were guardedly optimistic.

Macy officials were guardedly optimistic about the important Christmas season.

I am guardedly optimistic that an agreement can be reached on a governance plan this year.

He said he was guardedly optimistic that an agreement could be reached within 30 days.

From my own limited experiences, I am guardedly optimistic.

Mayor Haustein is guardedly optimistic he will be able to start building next month.

All sides came out of the meeting sounding guardedly optimistic.

Clinton administration officials say they are guardedly optimistic that Congress will approve the terms of the deal.