Dictionary definition · smirch
noun
- a blemish made by dirt"he had a smudge on his cheek"
- an act that brings discredit to the person who does it"he made a huge blot on his copybook"
verb
- smear so as to make dirty or stained
- charge falsely or with malicious intent; attack the good name and reputation of someone"The journalists have defamed me!"
Source: Open English WordNet (CC BY 4.0).