Fortifies is a term used to describe the act of strengthening or protecting something. Girds (5 letters) is an action that involves encircling or binding something with a belt or band, such as a girdle. MANS (4 letters) is an archaic term for fortifying a place with walls and towers. STEELS (6 letters) is an action that involves making something stronger by adding steel to it. Beefsup (7 letters) is an informal term for reinforcing something with extra strength or support. BOLSTERS (8 letters) is an action that involves providing additional support or reinforcement. All of these terms can be used to describe the act of fortifying something, which is the act of making it stronger or more secure.