Synonyms of 'flinty'

bony, cast-iron, concrete, constant, corneous, cruel, firm, grim, hard, hard-core, harsh, heartless, immovable, immutable, inclement, inexorable, inflexible, iron, ironlike, irreconcilable, loyal, merciless, osseous, pachydermatous, relentless, remorseless, resistive, rigid, rigorous, Rock, rock-ribbed, Rocky, set, slaty, solid, steadfast, steady, stiff, stone, stony, tough, true, unalterable, unchangeable, uncompromising, unforgiving, unmerciful, unpitying, unrelenting, unremorseful, unshaken, staunch, sot, ruthless, pitiless, petrogenic, obdurate, marble, lithoid, lithic, intransigent, insensitive, inelastic, implacable, impervious, horny, hardhearted, hardened, granitic, fixed, dure, dour, dog-eat-dog, dense, cement, callous, adamantine, adamant, unyielding, unmoved, unflappable, unfeeling, unbending, unaffected, Stern