Rustig

According to the Old English Dictionary:

rustig

adj. Rusty :-- Ðá wurdon Janes dura fæste betýned and his loco rustega 'Jani portas ipse clausit, Quas obseratas otio ipsa etiam rubigo signavit, Ors. 5, 15; Swt. 251, 21. [O. H. Ger. rostag scabrosus.] rustig