For one thing, she is a formidable campaigner — always on message, gaffe-free in debates and town halls, encyclopedic on policy, and comfortable with confrontation and competition.
Mr. Mills faces a formidable challenge in getting his message out across the state.
However, beyond its formidable prestige, there lies an influential message that reaches millions.
But as persuasive as Mr. Forbes's message may have been, his formidable organization and his seemingly endless campaigning here were at least as important.
Both Microsoft and Yahoo! have far more users than Google does in services such as web-mail and instant-messaging, and together would be formidable.
Ms. Winton has posted notices on two Brooklyn Internet message boards advertising Ms. Mingo's formidable skills and availability, but there have been few inquiries.
If I were to base my perception of the area solely on e-mail messages like these, it would be a formidable place.
"H.P. is a much more formidable challenger to Cisco, and it has sent an obvious message," said Nikos Theodosopoulos, an analyst at UBS Securities.
In a video message, Hillary Clinton paid tribute to Hague and Jolie as "formidable champions of this cause".
By contrast, Hillary Rodham Clinton, the Democratic front-runner, has established a formidable online presence that has used social media to amplify her message and enlist supporters, the analysis found.
