adamant, adamantine, at a standstill, cast-iron, certain, changeless, closed to, constant, determinate, determined, dogged, dour, dyed, established, fated, fateful, firm, fixed, flinty, frozen, fundamentalist, grim, hard, hard and fast, hard-core, hard-line, headstrong, hidebound, immobile, immotile, immotive, immovable, immutable, impersuadable, impersuasible, impervious, implacable, impliable, inalterable, indefeasible, indomitable, inductile, inelastic, ineluctable, inescapable, inevasible, inevitable, inexorable, inextensible, inextensile, inextensional, intractable, intractile, intransigent, invariable, invincible, iron, ironbound, ironclad, ironhanded, irreconcilable, irremovable, irresilient, irresistible, irrevocable, loyal, mulish, muscle-bound, necessary, nonelastic, nonstretchable, obdurate, obstinate, orthodox, pat, pigheaded, procrustean, purist, puristic, puritan, puritanic, refractory, relentless, resistless, resolute, resolved, rigid, rigorist, rigoristic, rigorous, rock-ribbed, rockbound, set, settled, severe, single-minded, sot, standpat, stationary, staunch, steadfast, steady, steely, stern, stiff, stony, straightlaced, straitlaced, strict, stubborn, sure, sure as death, sure as fate, true, unaccommodating, unadaptable, unaffected, unalterable, unamenable, unavoidable, unbending, unchangeable, unchanging, uncompliant, uncompromising, unconquerable, uncontrollable, undeflectable, unextendible, unextensible, unflappable, unflexible, ungiving, unimpressionable, uninfluenceable, unlimber, unmalleable, unmodifiable, unmovable, unmoved, unmoving, unpersuadable, unpliable, unpliant, unpreventable, unreceptive, unrelenting, unresponsive, unshakable, unshakeable, unshaken, unstoppable, unsuggestible, unsusceptible, unswayable, unswerving, untractable, unvaried, unvarying, unyielding
resolution, determination, will, iron will, unconquerable will, will of one's own, decision, resolution, backbone, clear grit, true grit, grit, sand, strength of mind, strength of will, resolve, firmness, energy, manliness, vigor, game, pluck, resoluteness, zeal, aplomb, desperation, devotion, devotedness, mastery over self, self control, self command, self possession, self reliance, self government, self restraint, self conquest, self denial, moral courage, moral strength, perseverance, tenacity, obstinacy, bulldog, British lion, resolved, determined, strong-willed, strong-minded, resolute, self-possessed, decided, definitive, peremptory, tranchant, unhesitating, unflinching, unshrinking, firm, iron, gritty, indomitable, game to the backbone, inexorable, relentless, not to be shaken, not to be put down, tenax propositi, inflexible
, obstinate, steady, earnest, serious, set upon, bent upon, intent upon, steel against, proof against, in utrumque paratus, resolutely, in earnest, in good earnest, seriously, joking apart, earnestly, heart and soul, on one's mettle, manfully, like a man, with a high hand, with a strong hand, at any rate, at any risk, at any hazard, at any price, at any cost, at any sacrifice, at all hazards, at all risks, at all events, a' bis ou a blanc, cost what it may, coute, a tort et a travers, once for all, neck or nothing, rain or shine, spes sibi quisque, celui qui veut celui-la peut, chi non s'arrischia non guadagna, frangas non flectes, manu forti, tentanda via est.
obstinacy, obstinateness, obstinacy, tenacity, cussedness, perseverance, immovability, old school, inflexibility, obduracy, obduration, dogged resolution, resolution, ruling passion, blind side, self-will, contumacy, perversity, pervicacy, pervicacity, indocility, bigotry, intolerance, dogmatism, opiniatry, opiniativeness, fixed idea, fanaticism, zealotry, infatuation, monomania, opinionatedness opinionativeness, mule, opinionist, opinionatist, opiniator, opinator, stickler, dogmatist, bigot, zealot, enthusiast, fanatic, obstinate, tenacious, stubborn, obdurate, casehardened, inflexible
, balky, immovable, unshakable, not to be moved, inert, unchangeable, inexorable, mulish, obstinate as a mule, pig-headed, dogged, sullen, sulky, unmoved, uninfluenced unaffected, willful, self-willed, perverse, resty, restive, restiff, pervicacious, wayward, refractory, unruly, heady, headstrong, entete, contumacious, crossgrained, arbitrary, dogmatic, positive, bigoted, prejudiced, creed- bound, prepossessed, infatuated, stiff-backed, stiff necked, stiff hearted, hard-mouthed, hidebound, unyielding, impervious, impracticable, inpersuasible, unpersuadable, intractable, untractable, incorrigible, deaf to advice, impervious to reason, crotchety, obstinately, non possumus, no surrender, ils n'ont rien appris ne rien oublie.
severity, strictness, harshness, rigor, stringency, austerity, inclemency, arrogance, precisianism, arbitrary power, absolutism, despotism, dictatorship, autocracy, tyranny, domineering, oppression, assumption, usurpation, inquisition, reign of terror, martial law, iron heel, iron rule, iron hand, iron sway, tight grasp, brute force, brute strength, coercion, strong hand, tight hand, hard lines, hard measure, tender mercies, sharp practice, pipe-clay, officialism, tyrant, disciplinarian, precisian, martinet, stickler, bashaw, despot, hard master, Draco, oppressor, inquisitor, extortioner, harpy, vulture, accipitres, birds of prey, raptorials, raptors, severe, strict, hard, harsh, dour, rigid, stiff, stern, rigorous, uncompromising, exacting, exigent, exigeant, inexorable, inflexible
, obdurate, austere, hard-headed, hard-nosed, hard-shell, relentless, Spartan, Draconian, stringent, strait-laced, searching, unsparing, iron-handed, peremptory, absolute, positive, arbitrary, imperative, coercive, tyrannical, extortionate, grinding, withering, oppressive, inquisitorial, inclement, cruel, haughty, arrogant, precisian, severely, with a high hand, with a strong hand, with a tight hand, with a heavy hand, at the point of the sword, at the point of the bayonet, Delirant reges plectuntur Achivi, manu forti, ogni debole ha sempre il suo tiranno.
straightness, rectilinearity, directness, inflexibility, straight line, right line, direct line, short cut, straight, rectilinear, rectilineal, direct, even, right, true, in a line, unbent, virgate, undeviating, unturned, undistorted, unswerving, straight as an arrow, inflexible
, laser-straight, ramrod-straight.
hardness, rigidity, renitence, renitency, inflexibility, temper, callosity, durity, induration, petrifaction, lapidification, lapidescence, vitrification, ossification, crystallization, stone, pebble, flint, marble, rock, fossil, crag, crystal, quartz, granite, adamant, bone, cartilage, hardware, heart of oak, block, board, deal board, iron, steel, cast iron, decarbonized iron, wrought iron, nail, brick, concrete, cement, hard, rigid, stubborn, stiff, firm, starch, starched, stark, unbending, unlimber, unyielding, inflexible
, tense, indurate, indurated, gritty, proof, adamant, adamantine, adamantean, concrete, stony, granitic, calculous, lithic, vitreous, horny, corneous, bony, osseous, ossific, cartilaginous, hard as a rock, stiff as buckram, stiff as a poker, stiff as starch, stiff as as board.
inelasticity, want of elasticity, absence of elasticity, inelasticity, unyielding, inelastic, inflexible