Rating | Solver | Clue |
---|---|---|
NONNEGOTIABLE | Ironclad | |
IRON-CASED | Cased or covered with iron, as a vessel; ironclad. | |
IRONCLAD | Rigorous; severe; exacting; as, an ironclad oath or pledge. | |
MONITOR | An ironclad war vessel, very low in the water, and having one or more heavily-armored revolving turrets, carrying heavy guns. |