Antonyms of adj unblemished

1 sense of unblemished

Sense 1
unblemished (vs. blemished), unmarred, unmutilated -- (free from physical or moral spots or stains; "an unblemished record"; "an unblemished complexion")

blemished (vs. unblemished) -- (marred by imperfections)
        => acned, pimpled, pimply, pustulate -- ((of complexion) blemished by imperfections of the skin)
        => blebbed, blebby -- ((of glass or quartzite) marred by small bubbles or small particles of foreign material)
        => blotchy -- (marred by discolored spots or blotches; "blotchy skin")
        => flyblown -- (especially of reputation; "a flyblown reputation")
        => marred, scarred -- (blemished by injury or rough wear; "the scarred piano bench"; "walls marred by graffiti")
        => pocked, pockmarked -- (marked by or as if by smallpox or acne or other eruptive skin disease)

Similarity of adj unblemished

1 sense of unblemished

Sense 1
unblemished (vs. blemished), unmarred, unmutilated -- (free from physical or moral spots or stains; "an unblemished record"; "an unblemished complexion")
       => stainless, unstained, unsullied, untainted, untarnished -- ((of reputation) free from blemishes; "his unsullied name"; "an untarnished reputation")
          Also See-> perfect#1; undamaged#1