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1. To tell a falsehood or mistruth about (something). I know you spent the money, I just don't understand why you feel you need to lie about it to me. While a bit of embellishment is all right, never lie about your experience on a résumé.
2. To recline or loiter lazily; to loaf. You can't just lie about here all summer long. Either find a job and start paying rent, or find somewhere else to live. My friends and I always loved lying about at the lake near our neighborhood when we were kids.
3. To be placed or located in a haphazard or careless location or position. Usually used in the continuous tense. You can't leave such sensitive information lying about—someone could see it who's not meant to. Why are all these boxes lying about? Someone could trip over them!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
lie about someone or something (to someone)
to say something untrue about someone or something to someone. I wouldn't lie about my boss to anyone! I wouldn't lie about anything like that!
1. [for someone] to recline lazily somewhere. She just lay about through her entire vacation. Don't lie about all the time. Get busy.
2. [for something] to be located somewhere casually and carelessly, perhaps for a long time. This hammer has been lying about for a week. Put it away! Why are all these dirty dishes lying about?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.