The Collaborative International Dictionary of English v.0.48:

Unspotted \Un*spot"ted\, a.
   Not spotted; free from spot or stain; especially, free from
   moral stain; unblemished; immaculate; as, an unspotted
   reputation. -- Un*spot"ted*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

unspotted
    adj 1: without soil or spot or stain [syn: unsoiled,
           unspotted, unstained]

Moby Thesaurus II by Grady Ward, 1.0:

111 Moby Thesaurus words for "unspotted":
   Christian, absolute, beyond all praise, blameless, bleached,
   blotless, bright, chaste, clean, cleanly, creditable, dainty,
   decent, defectless, dirt-free, erect, estimable, ethical, fair,
   fastidious, faultless, flawless, fresh, full of integrity, good,
   high-minded, high-principled, highly respectable, honest,
   honorable, ideal, immaculate, impeccable, indefectible,
   indefective, infallible, innocent, inviolate, irreproachable, just,
   just right, kosher, law-abiding, law-loving, law-revering, manly,
   moral, noble, nonpolluted, of cleanly habits, peerless, perfect,
   principled, pure, pure in heart, purehearted, reputable,
   respectable, right, right-minded, righteous, ritually pure,
   sexually innocent, shiny, sinless, smut-free, smutless, snowy,
   spotless, stainless, sterling, sweet, tahar, taintless,
   true-dealing, true-devoted, true-disposing, true-souled,
   true-spirited, truehearted, tubbed, unadulterated, unbesmirched,
   unblemished, unblotted, uncontaminated, uncorrupt, uncorrupted,
   undefiled, unfaultable, unimpeachable, unmixed, unmuddied,
   unpolluted, unsmirched, unsmudged, unsoiled, unstained, unsullied,
   untainted, untarnished, upright, uprighteous, upstanding, virtuous,
   well-scrubbed, well-washed, white, whitened, worthy, yeomanly