smudge

1 a : a blurry spot or streak b : an immaterial stain <cleanse him of every last smudge of impropriety — Richard Hanser> c : an indistinct mass : blur
2 : a smoldering mass placed on the windward side (as to protect from frost)
3 : a bid of four in pitch that if made wins the game

— smudg·i·ly \ˈsmə-jə-lē\ adverb

— smudg·i·ness \ˈsmə-jē-nəs\ noun

— smudgy \-jē\ adjective