immaculate, speckless, spick-and-span, spic-and-span, spic, spick, spotless -- (completely neat and clean; "the apartment was immaculate"; "in her immaculate white uniform"; "a spick-and-span kitchen"; "their spic red-visored caps")
immaculate, undefiled -- (free from stain or blemish)
faultless, immaculate, impeccable -- (without fault or error; "faultless logic"; "speaks impeccable French"; "timing and technique were immaculate"; "an immaculate record")