verb/kla.bo.de/
to bay, to bark loudly; to spread gossip, to scandalmonger
“Mais les plus fameux chirurgiens se trompaient bien. Voilà ce qu'on ne voudrait jamais croire! on allait rire, au contraire, clabauder!” — The greatest surgeons made mistakes, didn't they? That was something no one would ever believe. Everyone would laugh at him, talk about him.
From clabaud + -er.