actuate, arduous, artisan, assiduous, bearing, challenge, clamber, cogitate, contortionist, deftness, energetic, eventually, exhaustive, famished, fastidious, foray, forbearing, gesticulate, headstrong, hobble, hustle, immigrant, implacable, indomitable, insistence, insistent, lunge, martyrdom, painstaking, patient, protract, recruit, relentless, resilience, resist, resistance, resolute, retain, retrieve, sabotage, scour, scurry, sedulous, siege, swell, swift, thorough, traction, travail