The Oxford Thesaurus An A-Z Dictionary of Synonyms - perfectionistn.

1) purist, pedant, precisian, precisionist, stickler, Colloq fusspot, US fuss-budget: The foreman is such a perfectionist that there's no satisfying him. --adj. 2) meticulous, precise, punctilious, scrupulous, exacting, particular, demanding, fastidious, fussy; obsessive; Colloq picky, nit-picking: She takes a perfectionist attitude towards everything she does.