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Still not quite clear on Dara O'Briain...
As for Emeli Sandé... Never heard of the word Materteral, and it's not in my Chambers dictionary. But I accept it's one of those words that is almost never used, so if it's in the OED, I guess it's valid. But what a cumbersome, unwieldy word! (And it's funny how those two words fit their own description!) It took me a while to work out how it might be best pronounced. I still think 'avauntular' is better, as it dovetails neatly with the male counterpart. Shall we start a campaign to have it recognised as the proper word for 'having the qualities of an aunt'?
BTW, boxtops: she may not look like any aunt you know, but the point really was that, having seen her in interview, she did seem to be the kind of person you would like to have as an aunt (although in my case, that would be an odd age-relationship, as I probably have 40 years on her!)