1. superlative form of draffy; containing the most draff (dregs, refuse, or worthless matter); of the poorest or most inferior quality
Usage: archaic or literary; draff refers to the refuse or dregs of malt after brewing, or more broadly, worthless material

Examples

• The draffiest grain was separated from the good crop.
• He dismissed the proposal as the draffiest idea he had ever heard.
• The draffiest portions of the malt were discarded after fermentation.
• Among all the candidates, his qualifications seemed the draffiest.