rather
I think the 'negative' sense of
rather has been overstressed.
Rather is not always negative. It can often be used in comparisons, ie to indicate that some quality exists to a higher degree than its opposite quality. In this sense, "
the film was rather better than I thought" is a typical example of this use. It could be phrased differently, without a real change in meaning, like this: "
the film had more good elements than bad ones, although I didn't expect it would".
Look also at these finds from a Google search:
THE INDEPENDENT
Mr Hague is doing rather better than his party (
link)
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Geoff Hoon (Lord Privy Seal, House of Commons)
It might be rather better if, for a change, the Liberal Democrats lived in the real world and listened to the police, instead of commenting on leaked documents (
link)
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ECONOMIC & SOCIAL RESEARCH COUNCIL
...social science is now rather better focused on some of the most difficult medium to long-term issues facing the UK... (
link)
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'Yes. Rather better than twelve years ago.' 'Rather better?' said Mr Meagles, 'you mean rather worse...' (
link)
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By the way, a Google search produced these results:
-quite better: 53400 -rather better: 215000