showing sustained enthusiastic action with unflagging vitality; "an indefatigable advocate of equal rights"; "a tireless worker"; "unflagging pursuit of excellence"
not capable of being conquered or vanquished or overcome; "a tribute to his courage...and his unconquerable will"- R.E.Danielson; "faced unconquerable difficulties"
someone who adheres to strict religious principles; someone opposed to sensual pleasures
a member of a group of English Protestants who in the 16th and 17th centuries thought that the Protestant Reformation under Elizabeth was incomplete and advocated the simplification and regulation of forms of worship
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
not sympathetic or disposed toward; "unsympathetic officialdom"; "people unsympathetic to the revolution"; "his dignity made him seem aloof and unsympathetic"
(of characters in literature or drama) tending to evoke antipathetic feelings; "all the characters were peculiarly unsympathetic"
possessing or exerting or displaying energy; "an energetic fund raiser for the college"; "an energetic group of hikers"; "it caused an energetic chemical reaction"
extremely hot; "the fervent heat...merely communicated a genial warmth to their half-torpid systems"- Nathaniel Hawthorne; "set out...when the fervid heat subsides"- Frances Trollope
harshly uninviting or formidable in manner or appearance; "a dour, self-sacrificing life"; "a forbidding scowl"; "a grim man loving duty more than humanity"; "undoubtedly the grimmest part of him was his iron claw"- J.M.Barrie
not changeable or subject to change; "a fixed and unchangeable part of the germ plasm"-Ashley Montagu; "the unchangeable seasons"; "one of the unchangeable facts of life"
having momentous consequences; of decisive importance; "that fateful meeting of the U.N. when...it declared war on North Korea"- Saturday Rev; "the fatal day of the election finally arrived"