1. (a.) Bound as with iron; rugged; as, an ironbound coast.

2. (a.) Rigid; unyielding; as, ironbound traditions.

asperous bound corrugated cragged craggy crinkled crumpled dour fettered firm fundamentalist gravelly hampered handcuffed hard harsh hidebound impliable in bonds in chains in irons inexorable inflexible iron ironclad ironhanded jagged jaggy manacled muscle-bound obdurate obstinate orthodox procrustean purist puristic puritan puritanic ragged relentless rigid rigorist rigoristic rigorous rockbound rocky rugged rugose rugous saw-toothed sawtooth scabrous scragged scraggly scraggy serrate serrated shackled snagged snaggled snaggy stiff stony straightlaced straitlaced strapped stubborn tethered tied tied down tied up trammeled unbending uncompromising uneven unrelenting unsmooth unyielding wrinkled