| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | pigheaded, stubborn |
| Synonyms: | adamant, bullhead, callous, cold fish, dogged, firm, fixed, hanging tough, hard, hard-boiled, hard-hearted, hard-nosed, harsh, heartless, immovable, implacable, indurate, inexorable, inflexible, iron, mean, mulish, obstinate, perverse, relentless, rigid, set in stone, stiff-necked, thick-skinned, tough, tough nut to crack, unbending, uncompassionate, uncompromising, uncooperative, unemotional, unfeeling, unimpressible, unrelenting, unshakable, unsympathetic, unyielding |
| Antonyms: | amenable, gentle, submissive, susceptible, yielding |
| Main Entry: | austere |
| Part of Speech: | adjective |
| Definition: | severe in manner |
| Synonyms: | ascetic, astringent, cold, earnest, exacting, forbidding, formal, grave, grim, hard, harsh, inexorable, inflexible, obdurate, rigid, rigorous, serious, sober, solemn, somber, stern, stiff, strict, stringent, unfeeling, unrelenting |
| Antonyms: | bland, calm, gentle, meek, mild |
| Main Entry: | callous |
| Part of Speech: | adjective |
| Definition: | cruel, insensitive |
| Synonyms: | apathetic, blind to, careless, case-hardened, cold, cold-blooded, deaf to, hard, hard-bitten, hard-boiled, hardened, hardhearted, heartless, impassive, impenitent, indifferent, indurated, inflexible, insensate, insensible, insensitive, insentient, inured, obdurate, soulless, spiritless, stiff, stony, stubborn, thick-skinned, torpid, tough, toughened, unaffected, unbending, uncaring, uncompassionate, unconcerned, unfeeling, unimpressionable, unresponsive, unsusceptible, unsympathetic |
| Notes: | callus is a hard patch of skin; callous is an adjective meaning 'indifferent to suffering' or 'hardened' |
| Antonyms: | compassionate, feeling, kind, nice, sensitive, sympathetic, tender |
| Main Entry: | cold-blooded |
| Part of Speech: | adjective |
| Definition: | cruel, heartless |
| Synonyms: | barbarous, brutal, callous, cold, dispassionate, hard-boiled, hard-hearted, hardened, imperturbable, inhuman, matter-of-fact, merciless, obdurate, pitiless, relentless, ruthless, savage, steely, stony-hearted, uncompassionate, unemotional, unfeeling, unmoved |
| Notes: | cold-blooded (poikilothermic, poikilothermal) is used for creatures whose blood takes on the temperature of their environment; warm-blooded (homoiothermic, homeothermal) is having a fairly steady body temperature governed by the thermotaxic nerve mechanism |
| Antonyms: | compassionate, demonstrative, feeling, friendly, merciful, nice, sympathetic, warm-blooded |
| Main Entry: | contumacious |
| Part of Speech: | adjective |
| Definition: | headstrong, obstinate |
| Synonyms: | alienated, contrary, disaffected, estranged, factious, froward, haughty, inflexible, insubordinate, insurgent, intractable, intransigent, irreconcilable, mutinous, obdurate, perverse, pig-headed, rebellious, recalcitrant, refractory, seditious, stubborn, unyielding |
| Antonyms: | following, obedient, subordinate, tractable, willing |
| Main Entry: | dogged |
| Part of Speech: | adjective |
| Definition: | determined, persistent |
| Synonyms: | adamant, bullheaded, firm, hanging tough, hard-nosed, hardheaded, indefatigable, inexorable, inflexible, insistent, mulish, obdurate, obstinate, perseverant, perseverative, persevering, pertinacious, pigheaded, relentless, resolute, rigid, single-minded, staunch, steadfast, steady, stubborn, tenacious, tough nut, unbending, unflagging, unshakable, unyielding |
| Antonyms: | indifferent, irresolute, undetermined, yielding |
| Main Entry: | dogmatic |
| Part of Speech: | adjective |
| Definition: | dictatorial, opinionated |
| Synonyms: | arbitrary, arrogant, assertive, bigoted, bullheaded, categorical, cocksure, confident, definite, despotic, determined, dictative, doctrinaire, domineering, downright, egotistical, emphatic, fanatical, fascistic, formal, high and mighty, imperious, intolerant, magisterial, narrow-minded, obdurate, obstinate, one-sided, overbearing, peremptory, pigheaded, prejudiced, stiff-necked, stubborn, tenacious, tyrannical, unequivocal, wrong-headed |
| Antonyms: | amenable, doubting, flexible, indecisive, manageable, obedient, questioning, skeptical, submissive |
| Main Entry: | firm |
| Part of Speech: | adjective |
| Definition: | unalterable, definite |
| Synonyms: | abiding, adamant, bent, bound, consistent, constant, dead set on, determined, enduring, established, exact, explicit, fixed, flat, going, hang tough, inflexible, intent, never-failing, obdurate, persevering, persistent, prevailing, resolute, resolved, set, settled, specific, stable, stand pat, stated, staunch, steadfast, steady, stipulated, strict, strong, sure, tenacious, true, unbending, unchangeable, undeviating, unflinching, unqualified, unshakable, unshaken, unwavering, unyielding |
| Antonyms: | alterable, changeable, indefinite, irresolute |
| Main Entry: | hard |
| Part of Speech: | adjective |
| Definition: | cruel, ruthless |
| Synonyms: | acrimonious, angry, antagonistic, austere, bitter, bleak, brutal, callous, cold, cold fish, cold-blooded, dark, disagreeable, distressing, dour, exacting, grievous, grim, hard as nails, hard-boiled, harsh, hostile, inclement, intemperate, intolerable, obdurate, painful, perverse, pitiless, rancorous, resentful, rigorous, rugged, severe, stern, strict, stringent, stubborn, thick-skinned, tough, unfeeling, unjust, unkind, unpleasant, unrelenting, unsparing, unsympathetic, vengeful |
| Antonyms: | merciful, mild, nice, pleasant, sensitive, sympathetic |