adamantine

ad·a·man·tine

adj
\ˌa-də-ˈman-ˌtēn, -ˌtīn, -ˈman-t^ən\

Definition of ADAMANTINE

1

: made of or having the quality of adamant

2

: rigidly firm : unyielding <adamantine discipline>

3

: resembling the diamond in hardness or luster

Examples of ADAMANTINE

1. <the adamantine opposition of his parents to his marriage to a girl from a poor family>

Origin of ADAMANTINE

Middle English, from Latin adamantinus, from Greek adamantinos, from adamant-, adamas

First Known Use: 13th century

Related to ADAMANTINE

Synonyms: adamant, obstinate, bullheaded, dogged, hard, hardened, hardheaded, hard-nosed, headstrong, immovable, implacable, inconvincible, inflexible, intransigent, mulish, obdurate, opinionated, ossified, pat, pertinacious, perverse, pigheaded, self-opinionated, self-willed, stiff-necked, stubborn, unbending, uncompromising, unrelenting, unyielding, willful (or wilful)

Antonyms: acquiescent, agreeable, amenable, compliant, complying, flexible, pliable, pliant, relenting, yielding

Related Words: anal-retentive, obsessive; wayward, wrongheaded; 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; contrary, cussed; contumacious, disobedient, froward, insubordinate, intractable, recalcitrant, refractory, uncooperative, ungovernable, unmanageable, unruly; defiant, insurgent, mutinous; indomitable, invincible, unconquerable; confirmed, inveterate, unregenerate; demanding, exacting

Near Antonyms: docile, obedient, placable, submissive, tractable; accepting, persuadable, receptive, responsive, willing; governable, manageable, reasonable, temperate; slavish, subservient

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Other Mineralogy Terms

agate, host, inclusion, matrix, streak