<p><strong>Adjective:</strong></p><ul><li>not easing or slackening; maintaining speed, vigor, etc.: a relentless barrage of bad news.</li><li>unyieldingly severe, strict, or harsh: a relentless crackdown on human rights.</li><li>Synonyms: unyielding, adamant, obdurate, unbending, rigid</li><li>Antonyms: merciful</li></ul>