tusty Share definition Flag (adjective) Shabby beyond all disrepair. Unkempt, frowsy, broken, dusty, tattered, tarnished, or basically anything (or anyone) that is unsightly. I can't wear this linty, dusty sweater. Why not? You look fine. I'd rather not leave the house looking all tusty. tusty by tripscore November 18, 2010 Get the tusty mug.