"firmly optimistic" is correct and usable in written English.
You can use it to express a strong feeling of optimism, meaning that someone is certain that a good outcome will occur. Example sentence: She was firmly optimistic that her hard work would pay off in the end.
Despite the set backs Mr Tsipras told Reuters he was "firmly optimistic" of reach an agreement with eurozone creditors by the end of April.
"Despite the cacophony and erratic leaks and statements in recent days from the other side, I remain firmly optimistic that there will be an agreement by the end of the month" Mr Tsipras said.
Rouco said they are "firmly optimistic" about the outcomes of the lawsuit, adding that the firm is not in the habit of filing lawsuits they don't expect to win.
Mr Ishizuka acknowledges that the company is taking a risk, though given that Hitachi knows how to build advanced boiling water reactors and that it now owns the land on which to build them, he is firmly optimistic.
"I'm really optimistic," she said firmly, insisting that the nation would not be divided.
Sci-fi is often at its best when it puts concepts over spectacle, and it's gratifying to see some of the themes explored in The Witch's Familiar are firmly grounded in Doctor Who's humanist and ultimately optimistic worldview.
HONG KONG — Deflation remains firmly entrenched in Japan, figures showed on Friday, despite optimistic forecasts from the country's central bank, highlighting that there are no quick fixes for one of the world's largest economies.
I'm optimistic because the people behind TNI are so firmly committed to not calcifying.
I'm a sucker for 1996's Dragonheart, but its cartoony dragon and optimistic tale of bravery keep it rooted pretty firmly in kids' film territory.
Even though the Eurogroup get-together started with Greece and its creditors still firmly entrenched in their conflicting positions, investors became a little more optimistic the two sides would pull back from the brink before it was too late.
DreamWorks attributed the first-quarter earnings shortfall to overly optimistic home video sales for Shrek 2. "While we firmly believe that the Shrek franchise continues to be very strong, it is clear in retrospect that the unique blockbuster characteristics of Shrek 2 caused us to overestimate first-quarter retail sales," the company said in a statement.
