Thesaurus
cast–iron
adjective
Synonyms and Antonyms of CAST-IRON
1
not allowing for any exceptions or loosening of standards <lost weight only after a cast-iron adherence to his diet>
Synonyms brassbound, cast-iron, exacting, hard-line, inflexible, rigorous, strict, stringent, uncompromising
Related Words close, conscientious, exact, fussy, meticulous, painstaking, punctilious, scrupulous, undeviating; adamant, adamantine, determined, dogged, firm, relentless, resolved, single-minded, steadfast, stubborn, tenacious, unbending, unflinching; immovable, implacable, unappeasable, unrelenting, unsparing, unyielding; austere, demanding, flinty, grim, hard, hardened, hard-hearted, harsh, ironbound, severe, stern, tough
2
able to withstand hardship, strain, or exposure <he has a cast-iron faith in his innate ability to overcome any adversity that life might throw against him>
Synonyms cast-iron, hard, hard-bitten, hardened, inured, rugged, stout, strong, sturdy, tough, toughened, vigorous
Related Words flinty, leathery, resilient, stalwart; durable, enduring, everlasting, immortal, imperishable, lasting, permanent, stable, staunch (also stanch), staying, tenacious, unyielding; flourishing, prospering, thriving; able-bodied, brawny, muscular; fit, fortified, hale, healthy, husky, lusty, red-blooded, robust, sound, strapping, virile; annealed, seasoned, tempered
Near Antonyms emasculated, enervated, enfeebled, exhausted, run-down, sapped, wasted, weakened, worn, worn out; crippled, debilitated, diseased, incapacitated, infirm, unsound; fragile, frail, puny; resistless, sensitive, susceptible, unresistant, vulnerable, yielding; mortal, perishable, temporary, transient
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