0 said when someone has been accused of behaving badly in the past, with the result that people expect them to behave like that in the future --
This was a kindly way of putting the proverb about giving a dog a bad name, and Uncle Jacob's strongest quality was kindness—kindness and the cultivation of tulips.
They must confidently expect conduct from him of a high moral standard, and be careful at this early age to avoid the common fault of giving a dog a bad name.