dulbert

"He has told me that you were an angel once -- and he has wronged you, the dunce and dulbert -- you are an angel still."

Capt'n Davy's Honeymoon Hall Caine 1892

But Tam, though as great a dulbert as there is betwixt

Bog-Myrtle and Peat Tales Chiefly of Galloway Gathered from the Years 1889 to 1895 1887