"Forfeit" is just an ordinary dictionary word; see Merriam Webster ("to lose or lose the right to especially by some error, offense, or crime") and  Wiktionary ((1) "To suffer the loss of something by wrongdoing or non-compliance", (2) "To lose a contest, game, match, or other form of competition by voluntary withdrawal, by failing to attend or participate, or by violation of the rules"). We don't need the source to say an ordinary dictionary word to use it. Armbrust, now you're just making yourself look silly. The RfA established that you kept on making these daft mistakes and focused too much on minor things, then edit-warring to keep them in. When you're wrong, you insist you're right and eventually you realise you weren't. But then it happens again and keeps continuing. Can you not see a pattern? I'm surprised that you don't seem to be taking the advice on board.