PERSEVERANCE

n. persistence, steadfastness, determination, resolution, resolve, decisiveness, decision, firmness, purposefulness, pertinacity, staying power, stamina, sedulousness, assiduity, grit, pluck, tirelessness, indefatigableness, indefatigability, patience, endurance, diligence, devotion, tenacity, doggedness, stubbornness, inflexibility, obstinacy, obstinateness, obdurateness, Colloq guts, US stick-to-it-iveness Perseverance is essential for success in the theatre