Самое длинное русское слово

Самое длинное русское слово? "Слово о полку Игореве"!
The lay of the warfare waged by Igor

О руская земле! уже за шеломеном еси!
O Russian land! Far are you now beyond the hills!

Усобица княземъ на поганыя погыбе,
рекоста бо брат брату:
"Се мое, а то мое же".

The princes warred no more
Against the pagans,
For brothers spoke to brother,
Saying,
"This is mine,
And that, too, is mine!"