unbending Synonyms

rigid inflexible unshakeable stubborn strong-minded strict stiff-necked stiff stern steely steadfast single-minded severe set self-willed ruthless tough unbent uncompromising uncompliant unbendable unabated iron-willed strong-willed unswerving brassbound unwavering unadaptable unyielding unwarped unswayable unshakable unrelenting unflinching resolved resolute remorseless hidebound headstrong hard grim flinty fixed firm ferrous ferric dogged determined bullheaded bloody-minded