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Money, in the sense of being a product or source of greed. The phrase is Biblical in origin, and the word "lucre" comes from the Latin word lucrum, meaning "profit." She's always worked to better her community, without caring a bit about the filthy lucre she could make in a different field.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
money. I sure could use a little of that filthy lucre. I don't want to touch any of your filthy lucre.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
Money; originally, money obtained dishonestly. For example, She didn't like the job but loved the filthy lucre in the form of her weekly paycheck. This term comes from the Bible (Titus 1:11), where it refers to those who teach wrongly for the sake of money. In time it came to be used loosely, and usually jokingly, for money in general, and in the mid-1900s gave rise to the jocular slang term the filthy for "money." Although both versions may be dying out, the expression filthy rich, for "extremely wealthy," survives.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n. money. I sure could use a little of that filthy lucre.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
Money acquired by dishonorable means. The term comes from St. Paul’s Epistle to Titus (1:11), in which he criticizes those who teach things which they ought not “for filthy lucre’s sake.” Later the term came to be used ironically for money in general, even if it had been honestly earned. Perhaps scruples have changed, for the term is heard less often today.
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer