Help!!

Did anyone watch the BBC Three comedy show "Grownups"?

If so, did you happen to see the episode called Chimps where a game of Scrabble was undertaken to win tickets for a secret gig.  If you saw it, what was the winning word????

The character who won, Claire, was asked to use the disputed word in a sentence and she said the following:
"I beat you in Scrabble by using the word <forgotten-word>".

There's a bet on the outcome of this, involving the purchase of donuts.. so any assistance (and evidence to back it up) would be appreciated.