inflexible Synonyms

unbending rigid uncompromising pertinacious inexorable obstinate stubborn unyielding unrelenting tight tenacious stringent sturdy stony strong-minded strong tough traditionalist true-blue unshakable unmovable unlimber unflexible unelastic uncharitable unsparing tyrannical strict strait self-willed ruthless rigorous rigorist rhadamanthine resolute resistant remorseless relentless regimental set severe resolved stiff-necked stiff stern steely steadfast static starched solid