perfectionist
per‧fec‧tion‧ist /pəˈfekʃənəst, pəˈfekʃənɪst $ pər-/
noun [countable]
Many top athletes are perfectionists who drive themselves to excel.
—perfectionist adjective
—perfectionism noun [uncountable]
per‧fec‧tion‧ist /pəˈfekʃənəst, pəˈfekʃənɪst $ pər-/
noun [countable] Word Family: noun: perfection ≠ imperfection, perfectionist, perfectionism, perfectibility; adjective: perfect ≠ imperfect, perfectible, perfectionist; verb: perfect; adverb: perfectly ≠ imperfectly
someone who is not satisfied with anything unless it is completely perfect: —perfectionist adjective
—perfectionism noun [uncountable]