yadder verb 2exclamation 1noun 1forms 3 verb2 •To babble; to talk or vocalize about trivialities.Writers are wordy people. They talk, they blab, they yadder. — 2004 •To brace or reinforce with a yadder. exclamation1 •Used to represent meaningless or implied verbiage. noun1 •(dialect, no longer used) A stake used for bracing. formsyaddered · yaddering · yadders