guided by practical experience and observation rather than theory; "a hardheaded appraisal of our position"; "a hard-nosed labor leader"; "completely practical in his approach to business"; "not ideology but pragmatic politics"
unreasonably rigid in the face of argument or entreaty or attack
not capable of being conquered or vanquished or overcome; "a tribute to his courage...and his unconquerable will"- R.E.Danielson; "faced unconquerable difficulties"
showing sustained enthusiastic action with unflagging vitality; "an indefatigable advocate of equal rights"; "a tireless worker"; "unflagging pursuit of excellence"
having been learned or found or determined especially by investigation
characterized by great determination; "a struggle against a determined enemy"
determined or decided upon as by an authority; "date and place are already determined"; "the dictated terms of surrender"; "the time set for the launching"
devoting full strength and concentrated attention to; "made continued and determined efforts to find and destroy enemy headquarters"
devoted to a cause or ideal or purpose; "a dedicated dancer"; "dedicated teachers"; "dedicated to the proposition that all men are created equal"- A.Lincoln