filthy

[fil-thee] /ˈfɪl θi/
adjective, filthier, filthiest.
1.
foul with, characterized by, or having the nature of filth; disgustingly or completely dirty.
2.
vile; vulgar; obscene:
filthy language.
3.
contemptibly offensive, vile, or objectionable:
to treat one's friends in a filthy manner.
4.
(of money) abundantly supplied (often followed by with):
They're filthy with money.
verb (used with object), filthied, filthying.
5.
to make filthy; foul.
Idioms
6.
filthy rich, outrageously wealthy; very rich.
Origin
1350-1400; Middle English; see filth, -y1
Related forms
filthily, adverb
filthiness, noun
Synonyms
1. See dirty.
British Dictionary definitions for filthy rich

filthy

/ˈfɪlθɪ/
adjective filthier, filthiest
1.
characterized by or full of filth; very dirty or obscene
2.
offensive or vicious: that was a filthy trick to play
3.
(informal, mainly Brit) extremely unpleasant: filthy weather
adverb
4.
extremely; disgustingly: filthy rich
Derived Forms
filthily, adverb
filthiness, noun
Word Origin and History for filthy rich

filthy

adj.

late 12c., fulthe, "corrupt, sinful," from filth + -y (2). Meaning "physically unclean" is from late 14c. Meaning "morally dirty, obscene" is from 1530s.

In early use often hardly more emphatic than the mod. dirty; it is now a violent expression of disgust, seldom employed in polite colloquial speech. [OED]
Related: Filthiness.

Slang definitions & phrases for filthy rich

filthy rich

adjective phrase

Very rich; loaded


filthy

adjective
  1. Wealthy; rich; loaded: He's filthy with dough (1930s+)
  2. Obscene; salacious; blue, dirty: filthy movies/ filthy minds (1535+)
  3. Excellent; desirable; cool, rad (1990s+ Teenagers)