tarnishes

damage defame dim dull embarrass harm hurt impair mar muddy pollute smear spoil stain sully taint tar

befoul begrime blacken blemish blot contaminate darken defile discolor disgrace grime injure pale rust slander smudge soil spot vitiate

lose luster lose shine

aid assist benefit clean fix heal help improve mend please

beautify brighten cure honor lighten praise purify whiten

polish uncorrupt