For a start, I know there has already been this question, but I have an extra bit to add... On wiktionary (I know it isn't great in general, so don't slate me for using it!), it says 'the current stress on the second syllable is explained by Jacob Grimm's German Grammar as the result of the tones of -end and leb- switching.' Can anybody elaborate on what this means? Or just explain generally why the stress is on the 'wrong' syllable? Thanks.