unyielding Synonyms - page 3

inacquiescent hardened hard grinner grim granitic froward foursquare formidable flinty harden hard-mouthed headstrong improgressive impregnable imposable impliable implacable impersuasible immune immovable hidebound fixed firm fierce bulldog brave bowelless bold bloody-minded bigoted aleutian aggressive adamantine bullhead bullheaded compacted ernest enduring durable dura disciplined determined dauntless contumacious consuming adamant incompliant recalcitrant obdurate