| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | stern |
| Synonyms: | cruel, firm, hard, inflexible, rigid, steely, stony, unsympathetic, unyielding |
| Main Entry: | hard |
| Part of Speech: | adjective |
| Definition: | rocklike |
| Synonyms: | adamantine, callous, compact, compacted, compressed, concentrated, consolidated, dense, firm, hardened, impenetrable, indurate, indurated, inflexible, iron, packed, rigid, rocky, set, solid, stiff, stony, strong, thick, tough, unyielding |
| Antonyms: | flexible, malleable, pliable, pliant, soft, yielding |
| Main Entry: | hard-core |
| Part of Speech: | adjective |
| Definition: | dedicated |
| Synonyms: | determined, devoted, die-hard, dyed-in-the-wool, explicit, extreme, faithful, intransigent, obstinate, resolute, rigid, staunch, steadfast, stubborn, uncompromising, unwaivering, unyielding |
| Antonyms: | indulgent, mild, moderate, soft-core, tolerant, undedicated |
| Main Entry: | hard-line |
| Part of Speech: | adjective |
| Definition: | firm |
| Synonyms: | adamant, hard-boiled, hard-core, hard-nosed, inflexible, militant, stand pat, staunch, steadfast, stern, stiff, strict, unbending, uncompromising, ungiving, unyielding |
| Main Entry: | hard-nosed/hardheaded |
| Part of Speech: | adjective |
| Definition: | stubborn |
| Synonyms: | astute, bullheaded, hard*, hard-boiled, headstrong, intractable, levelheaded, locked in, mulish, obstinate, pertinacious, perverse, pigheaded, practical, pragmatic, rational, realistic, resolute, sensible, shrewd, sober, stand pat, tough, tough-nut, unsentimental, unyielding, willful |
| Antonyms: | easy, easy-going, laid-back, merciful |
| Main Entry: | headstrong |
| Part of Speech: | adjective |
| Definition: | stubborn |
| Synonyms: | bullheaded, contrary, determined, foolhardy, froward, hard-core, hard-nosed, hard-shell, heedless, imprudent, impulsive, intractable, locked-in, mule, mulish, murder, obstinate, perverse, pig-headed, rash, reckless, refractory, self-willed, strong-minded, uncontrollable, ungovernable, unruly, unyielding, willful |
| Antonyms: | calm, docile, moderate, obedient, submissive, tolerant |
| Main Entry: | immovable |
| Part of Speech: | adjective |
| Definition: | fixed, stubborn |
| Synonyms: | adamant, constant, dead set on, dug in, fast, firm, hard-nosed, immobile, immotile, immutable, impassive, inflexible, intransigent, locked in, motionless, obdurate, quiescent, resolute, rooted, secure, set, set in concrete, set in stone, solid, stable, stand pat, stationary, steadfast, stick to guns, stuck, tough nut, unalterable, unchangeable, uncompromising, unmodifiable, unshakable, unwavering, unyielding |
| Antonyms: | mobile, movable, moving, unfixed |
| Main Entry: | implacable |
| Part of Speech: | adjective |
| Definition: | merciless, cruel |
| Synonyms: | grim, inexorable, inflexible, intractable, ironfisted, mortal, pitiless, rancorous, relentless, remorseless, ruthless, unappeasable, unbending, uncompromising, unflinching, unforgiving, unrelenting, unyielding, vindictive |
| Notes: | placable is 'of a tolerant nature' - the opposite of implacable |
| Antonyms: | kind, merciful, nice, placable |
| Main Entry: | inexorable |
| Part of Speech: | adjective |
| Definition: | cruel, pitiless |
| Synonyms: | adamant, adamantine, bound, bound and determined, compulsory, dead set on, dogged, hard, harsh, hell bent on, immobile, immovable, implacable, ineluctable, inescapable, inflexible, ironclad, like death and taxes, locked in, mean business, merciless, necessary, no going back, obdurate, obstinate, relentless, remorseless, resolute, rigid, set in stone, severe, single-minded, stubborn, unappeasable, unbending, uncompromising, unmovable, unrelenting, unyielding |
| Antonyms: | flexible, lenient, merciful, remorseful, yielding |