Synonyms and Antonyms of adamantine
- the adamantine opposition of his parents to his marriage to a girl from a poor family
adamant, bullheaded, dogged, hard, hard-nosed, hardened, hardheaded, headstrong, immovable, implacable, inconvincible, inflexible, intransigent, mulish, obdurate, obstinate, opinionated, ossified, pat, pertinacious, perverse, pigheaded, self-opinionated, self-willed, stiff-necked, stubborn, unbending, uncompromising, unrelenting, unyielding, willful (or wilful)
determined, hell-bent, inexorable, persistent, relentless, resolved, set, single-minded, steadfast, stouthearted, tenacious, unflinching
firm, hard-line, hard-shell (or hard-shelled), iron, severe, stern, strict
hidebound, narrow-minded, rigid
bloody-minded [chiefly British], cantankerous
contumacious, disobedient, froward, insubordinate, intractable, recalcitrant, refractory, uncooperative, ungovernable, unmanageable, unruly
indomitable, invincible, unconquerable