besmirched

/B EH1 S M ER1 CH T/
verb
  1. 1

    To make dirty.

    syn:soil
  2. 2

    To tarnish something, especially someone's reputation.

    โ€œThe newspaper was on a campaign to besmirch the actor.โ€

Source: https://en.wiktionary.org/wiki/besmirch, https://en.wiktionary.org/wiki/besmirched