The term 'GET RUSTY' can be solved by three crossword solutions: OXIDIZE (7 letters), OXIDATE (7 letters), and GOSTALE (7 letters). OXIDIZE and Oxidate are both verbs which mean to cause a metal to corrode or rust due to a chemical reaction with oxygen. Gostale is an adjective which means to become rusty or corroded. All three words refer to the process of rusting, which is the corrosion of metals caused by a reaction with oxygen in the presence of water or moisture.