"flush with confidence" is a correct and usable phrase in written English.
It means to have a strong or overflowing sense of self-assurance or sureness. Example: After winning her fifth gold medal, the athlete walked onto the podium, flush with confidence, knowing she had given her all and achieved her goal.
Both teams are flush with confidence.
Flush with confidence, I went back for a showdown with my tormentor of the last two evenings.
By contrast, the Gore camp is so flush with confidence that today the vice president took his first day off from the campaign trail this year.
Flush with confidence, Nelson entertained his substantial following with a closing round of 70, sufficient for a four-shot victory lacking in suspense.
Mr. Tietjen at Smith Haven said that the 160-store mall did not see an increase in shoppers, but that people flush with confidence about the economy simply bought more and were not afraid to buy big-ticket gifts.
ST. PETERSBURG, Fla .— After a week spent beating up the worst team in the American League East, the Yankees were flush with confidence and energized to find themselves back in a playoff race most people thought had passed them by.
Even if it were flush with cultural confidence, though, can a 301-acre historical village now hope to compete with more extravagant theme parks?
For the first time since 1929, the heads of the big three EU governments—France, Germany and Britain are of the left, and a left that is flush with the self-confidence of its electoral triumphs.
But though Shelly may be flushed with new confidence, he hardly inspires it.
Flush with cash and confidence from his Nabisco victory, Mr. Icahn appeared ready for an even bolder move in August, when he told General Motors that he might buy up to 15percentt of its shares, a stake worth $5.4 billion.
America was flush with cash and self-confidence.
