Draffy is a word that isn't commonly used, but it generally means something is low-quality, inferior, or useless. A few synonyms for draffy include shoddy, substandard, mediocre, subpar, and inferior. These words all convey a sense of something being below average or not meeting expectations in some way. Other synonyms for draffy include poor, lousy, unsatisfactory, and bad. While they might not be as specific as draffy, these words all communicate a similar idea. It's important to choose the right synonym depending on the context and situation to convey the exact meaning you are looking for.