Synonyms of irons

1 Syllable
steel, firm, bond, thick, strong, cruel
2 Syllables
heavy, stubborn, steely, dense, fetters, rigid, ferrous, handcuff, ferric, shackle, robust, shackling
3 Syllables
unyielding, handcuffing, vinculum, adamant, handcuffed, relentless, leg-iron, unbending
4 Syllables
immovable, implacable, obdurate, insensible
5 Syllables
inexorable, indomitable, adamantine