The phrase "a rather more optimistic" is correct and usable in written English.
It can be used when comparing levels of optimism, often in a context where you want to express a greater degree of optimism than previously stated.
Example: "After reviewing the latest data, I feel a rather more optimistic outlook for the project's success."
Alternatives: "a significantly more optimistic" or "a considerably more optimistic".
Rich economies showed little sign of escaping the productivity doldrums into which they sank in the early 1970s; the tech boomlet of the late 1990s and early 2000s came and went all too quickly.On reviewing the evidence, this newspaper came to a rather more optimistic assessment than Mr Gordon.Closer analysis of recent figures, though, suggests reason for optimism.
This suggests a rather more optimistic future for people turning 85 and challenges the idea that increasing longevity and life expectancy of successive generations of older people should always be treated with alarm.
A third group, rather more optimistic than these two, argues that global warming is actually just an illusion, and that if nothing is done about it, it won't happen anyway.
I'm rather more optimistic.
Anglada-Escudé is rather more optimistic.
United are rather more optimistic about Ferdinand, who was forced out of Tuesday's game five minutes into the second half after feeling some discomfort in his hamstring.
But Sight and Sound Technology's Glenn Tookey is rather more optimistic.
For rather more optimistic views of the relation between truthlikeness and belief revision see Kuipers 2000, Lavalette, Renardel & Zwart 2011, and Cevolani, Festa and Kuipers 2013).
We'd rather be a little more optimistic about integrating new technologies into our daily existences. .
If treatment is conceived of as an ongoing process rather than as a cure, a different, more optimistic notion of success emerges.
It's astonishing how well these would-be martyrs have aged and their testimony makes one believe that these exploits happened yesterday rather than representing a now distant, more optimistic America.
