"no flies on" meaning in English

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  "etymology_text": "A litotes suggesting one is not torpid enough to have flies settle.",
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        {
          "ref": "1899, Grant Allen, chapter 3, in Miss Cayley's Adventures",
          "text": "\"You're jest about the very woman I'm looking for, miss. Lithe—that's what I call you. I kin put you in the way of making your pile, I kin. This is a bonâ-fide offer. No flies on my business!\"",
          "type": "quotation"
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        {
          "ref": "1909, William Dean Howells, chapter 5, in A Hazard of New Fortunes",
          "text": "I give you my word that there are no flies on his personal integrity, if that's what you mean.",
          "type": "quotation"
        },
        {
          "ref": "1914, Peter B. Kyne, chapter 13, in The Long Chance",
          "text": "\"He knows what we want, you bet\" he whispered. \"No flies on that preacher. I like him. I like any man who can do things without a diagram and directions for using.\"",
          "type": "quotation"
        },
        {
          "ref": "1915, John Galsworthy, The Little Man, sc. 1",
          "text": "GERMAN. Wait! You are a young people.\nAMERICAN. That is so; there are no flies on us.",
          "type": "quotation"
        },
        {
          "ref": "2000 June 3, James Brooke, “A Budget Canadian Carrier Brings Back the Friendly Skies”, in New York Times, retrieved 2013-10-31",
          "text": "\"WestJet is tightly run, well managed, there are no flies on those guys,\" said Harry Gow, a board member of the Canadian Association of Airline Passengers.",
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        }
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        "No mental weaknesses, character defects, or other significant flaws belonging to."
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      "id": "en-no_flies_on-en-phrase-9gUZnzAv",
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        "(idiomatic) No mental weaknesses, character defects, or other significant flaws belonging to."
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          "word": "and no flies"
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  "word": "no flies on"
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      "word": "and no flies"
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          "text": "\"You're jest about the very woman I'm looking for, miss. Lithe—that's what I call you. I kin put you in the way of making your pile, I kin. This is a bonâ-fide offer. No flies on my business!\"",
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        },
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          "ref": "1914, Peter B. Kyne, chapter 13, in The Long Chance",
          "text": "\"He knows what we want, you bet\" he whispered. \"No flies on that preacher. I like him. I like any man who can do things without a diagram and directions for using.\"",
          "type": "quotation"
        },
        {
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          "type": "quotation"
        },
        {
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