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

1) spotless, stainless, unblemished, pure, clean, untarnished, unsullied, unsoiled, snow-white, spick and span, dapper, spruce; tidy, neat: Each morning he donned an immaculate uniform. 2) pure, chaste, innocent, virginal, virtuous, vestal, pristine, undefiled, untainted, unspoiled, unblemished, stainless, unadulterated: He remained convinced of his wife's immaculate reputation. 3) faultless, flawless, perfect, errorless, impeccable: His essay on Gibbon is an example of immaculate scholarship.