(Fuh-Get-About-It)
(Forget-About-It)
Fuhgettaboutit - most commonly used in New York.
Used when someone is angry or showing signs of denial.

Fuhgettaboutit is a word that most Italian-Americans (usually from New York or Boston) use to say "forget about it" or "don't mention it". I as an Italian-American find myself slipping up and saying instead of "Forget about it, that's all right!" I say "Fuhgettaboutit, that's all right"! This can be used by people other than Italian-Americans, but it originated from our roots.