Synonyms of 'smudge'
1 smearDictionary, blur, blot
Smudge the outline using a cotton-wool bud.
2 markDictionary, soil, dirty
She kissed me, careful not to smudge me with her fresh lipstick.
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A blot is a drop of liquid that has fallen on to a surface and has dried.
an ink blot
Thesaurus for smudge from the Collins English Thesaurus
A smudge is a dirty mark.