Definify.com
Webster 1913 Edition
Perfectionist
Per-fec′tion-ist
,Noun.
1.
One pretending to perfection; esp., one pretending to moral perfection; one who believes that persons may and do attain to moral perfection and sinlessness in this life.
South.
Webster 1828 Edition
Perfectionist
PERFEC'TIONIST
,Noun.