[ fil-thee ]
/ ˈfɪl θi /

adjective, filth·i·er, filth·i·est.

foul with, characterized by, or having the nature of filth; disgustingly or completely dirty.
vile; vulgar; obscene: filthy language.
contemptibly offensive, vile, or objectionable: to treat one's friends in a filthy manner.
(of money) abundantly supplied (often followed by with): They're filthy with money.

verb (used with object), filth·ied, filth·y·ing.

to make filthy; foul.

Idioms for filthy

    filthy rich, outrageously wealthy; very rich.

Origin of filthy

Middle English word dating back to 1350–1400; see origin at filth, -y1


filth·i·ly, adverbfilth·i·ness, noun

synonym study for filthy

1. See dirty. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for filthiness

British Dictionary definitions for filthiness

/ (ˈfɪlθɪ) /

adjective filthier or filthiest

characterized by or full of filth; very dirty or obscene
offensive or viciousthat was a filthy trick to play
informal, mainly British extremely unpleasantfilthy weather


extremely; disgustinglyfilthy rich

Derived forms of filthy

filthily, adverbfilthiness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012