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1.
one who appears to be squeaky clean, but is actually utter filth.

word is uttered with extra 'ph' to give gravitas to how filthy this specimen of human male is.

philth is naturally tiny like a pygmy, as the filthiest things in the world come in small packages
"Look at that bloke coming on to that poor girl. He's just philth."
by Me! May 18, 2005