Synonyms For "Smear" :

1 syllable:

blot, blur, daub, slur, smirch, smudge, smutch, spot, stain

2 syllables:

asperse, besmirch, defame, slander, sully

3 syllables:

cytosmear, denigrate, malignment

4 syllables:

calumniate

5 syllables:

vilification