Doctors at the center fighting to save these babies have taken on an unexpected and formidable group of opponents: the mothers themselves.

Soon he finds out where the women are when a formidable group of riders, all female, round up a group of the men.

The Kane clan will be a formidable group.

Comments: The Lions return their skilled position players intact and it's a formidable group.

Suddenly hard-faced, a formidable group of six, the pilots glowered at the businessman and the cyborg.

It also raises the question of how such a small liberal arts college in western Massachusetts could have produced so formidable a group.

Ms. Mohsin marshaled a formidable group of supporters during her husband's 25 days in detention.

The new target date intensifies a race between two formidable groups of biologists.

It's a formidable group in theory, but that's the problem.

Fans stormed the aisles, only to be met by a small but formidable group of walkie-talkie-wielding sentinels.