unrelenting (redirected from unrelentingness)

unrelenting adjective adamant, austere, ceaseless, constant, continual, continuous, cruel, determined, endless, enduring, hard, immitis, implacable, incessant, inclement, indefatigable, inexorabilis, inexorable, merciless, obdurate, perseverant, persevering, persistent, pertinacious, pitiless, relentless, remorseless, rigid, rigorous, ruthless, sedulous, severe, stern, stubborn, tenacious, unappeasable, unbending, uncompassionate, uncompromising, undeviating, unmerciful, unpitying, unsoftening, unsparing, unwavering, unyielding

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See also: brutal, callous, constant, cruel, dictatorial, diligent, faithful, immutable, implacable, inexorable, inflexible, ironclad, obdurate, patient, pertinacious, recalcitrant, relentless, remorseless, resolute, rigid, ruthless, sedulous, severe, unbending, uncompromising, undaunted, vindictive