unshakable, unwavering, unbreakable, unswerving, unyielding, steadfast, unbending, unfailing, unfaltering, unquestionable, undying, implacable, unshaken, impregnable, undiminished, unquestioned, uncompromising, steely, unimpeachable, immutable, undeniable, resolute, unarguable, indestructible, unassailable, unfeigned, unerring, unfading, unquestioning, unalterable, unflagging, unflinching, everlasting, unstinting, unchanging, indomitable, unbroken, unchangeable, obdurate, ironclad, unflappable, unbendable, adamantine, enduring, ineradicable, imperturbable, inseparable, unhesitating, inescapable, invariable, immovable, cemented, invincible, unequivocal, irrepressible, unalloyed, abiding, unassailed, undeviating, indisputable, undefeatable, imperishable, unrelenting, preternatural, undisputable, untempered, instinctive, infallible, unconquerable, unmatchable, impeccable, irrefutable, unreasoning, unrivaled, undimmed, incommunicable, innate, unclouded, unremitting, unmistakable, inextricable, incorruptible, cocksure, unambivalent, unspoken, unsurpassable, delusory, indubitable, eternal, unequaled, uncanny, amour propre, irreducible, inviolable, brittle, good naturedness, boundless, irremovable, impenetrable, undoubted, unquenchable, peerless, firmest, firm, firmer, unchallengeable, immoveable

resolution