From WordNet (r) 2.0 [wn]:
adjective
1: stubbornly unyielding; "dogged persistence"; "dour determination"; "the most vocal and pertinacious of all the critics"; "a mind not gifted to discover truth but tenacious to hold it"- T.S.Eliot; "men tenacious of opinion" [syn: {bulldog}, {dogged}, {dour}, {pertinacious}, {tenacious}]
2: refusing to give way or compromise; "unyielding determination"
3: having austere inflexibility; "a flinty manner"; "granitic morality"; "his unyielding mouth and glassy eyes"- Marchette Chute [syn: {flinty}, {granitic}]
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
225 Moby Thesaurus words for "unyielding": adamant, adamantine, at a standstill, bowelless, bulky, bullheaded, cast-iron, certain, closed to, complaining, constant, cruel, dense, disputatious, disputing, dissentient, dissenting, dog-eat-dog, dour, durable, enduring, fated, fateful, firm, fixed, flinty, fractious, frozen, fundamentalist, grim, hard, hard-core, hard-line, harsh, headstrong, heartless, heavy, hidebound, immobile, immotile, immotive, immovable, immutable, impenetrable, impersuadable, impersuasible, impervious, implacable, impliable, impregnable, inclement, incontestable, indefeasible, indomitable, inductile, inelastic, ineluctable, inescapable, inevasible, inevitable, inexorable, inexpugnable, inextensible, inextensile, inextensional, inflexible, insuperable, intractable, intractile, intransigent, invincible, inviolable, invulnerable, iron, ironbound, ironclad, ironfisted, ironhanded, irreconcilable, irremovable, irresilient, irresistible, irrevocable, lasting, loyal, massive, merciless, mortal, mulish, muscle-bound, necessary, noncooperative, nonelastic, nonstretchable, obdurate, objecting, obstinate, obstructive, on the barricades, orthodox, overpowering, overwhelming, pat, pertinacious, pigheaded, pitiless, procrustean, proof against, protesting, purist, puristic, puritan, puritanic, rebellious, recalcitrant, refractory, relentless, reluctant, remorseless, renitent, repellent, resistant, resisting, resistive, resistless, retardant, retardative, rigid, rigorist, rigoristic, rigorous, rock-ribbed, rockbound, rugged, ruthless, self-willed, set, settled, single-minded, solid, sot, sound, stable, standpat, stationary, staunch, steadfast, steady, steely, stern, stiff, stout, straightlaced, straitlaced, strong, stubborn, sturdy, sure, sure as death, sure as fate, tough, true, unaffected, unalterable, unamenable, unappeasable, unassailable, unavoidable, unbeatable, unbending, unchangeable, uncompassionate, uncompassioned, uncompliant, uncompromising, unconquerable, uncontrollable, uncooperative, undeflectable, unextendible, unextensible, unfeeling, unflappable, unflexible, unflinching, unforgiving, ungiving, unimpressionable, uninfluenceable, unlimber, unmalleable, unmerciful, unmovable, unmoved, unmoving, unpersuadable, unpitiful, unpitying, unpliable, unpliant, unpreventable, unreceptive, unrelenting, unremorseful, unresponsive, unshaken, unstoppable, unsubduable, unsubmissive, unsuggestible, unsurmountable, unsusceptible, unswayable, unswerving, unsympathetic, unsympathizing, untractable, up in arms, well-built, well-constructed, well-founded, well-grounded, well-made, without mercy, withstanding
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Let's see what we can do if we put our heads together.
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