sully
verb
[ ˈsʌli ]
• damage the purity or integrity of.
• "they were outraged that anyone should sully their good name"
Similar:
taint,
defile,
soil,
tarnish,
stain,
blemish,
besmirch,
befoul,
contaminate,
pollute,
spoil,
mar,
spot,
make impure,
disgrace,
dishonour,
injure,
damage,
Origin:
late 16th century: perhaps from French souiller ‘to soil’.