Well, the argument goes, management has yet to come to the table with any serious proposals.

He doesn't think a serious proposal would meet with much resistance.

The first serious proposal was made in the mid-1990s, as the League expanded further.

Perhaps the most serious proposal was offered in the mid-1990s.

More or less serious proposals to move them around were floated beginning in the 1980s.

"It is a serious proposal and we look forward to the negotiations."

The idea dates back to the 1940s, but serious proposals were not made until the 1960s.

Labor leaders said he never made any serious proposals about the other half.

I'm always open to serious proposals that address the costs at the heart of the problem.

They've both made serious proposals that seem likely to do a lot more good than harm.