"cui prodest" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "-"
      },
      "expansion": "Latin",
      "name": "uder"
    }
  ],
  "etymology_text": "From Latin.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "nolinkhead": "1"
      },
      "expansion": "cui prodest (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2016 November, Donald Rayfield, “The Monk behind the Myth”, in Literary Review:",
          "text": "On the basis of cui prodest, the British and French might have helped kill Rasputin (to prevent him from persuading the Tsar to make peace with the Germans), but the presence of agents from both countries seems unlikely.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The rhetorical question \"Who benefits?\", as used to establish motive for a crime etc."
      ],
      "id": "en-cui_prodest-en-noun-k9RYNuyB",
      "synonyms": [
        {
          "word": "cui bono"
        }
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "cui prodest"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "-"
      },
      "expansion": "Latin",
      "name": "uder"
    }
  ],
  "etymology_text": "From Latin.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "nolinkhead": "1"
      },
      "expansion": "cui prodest (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms derived from Latin",
        "English terms with quotations",
        "English uncountable nouns",
        "English undefined derivations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2016 November, Donald Rayfield, “The Monk behind the Myth”, in Literary Review:",
          "text": "On the basis of cui prodest, the British and French might have helped kill Rasputin (to prevent him from persuading the Tsar to make peace with the Germans), but the presence of agents from both countries seems unlikely.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The rhetorical question \"Who benefits?\", as used to establish motive for a crime etc."
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "cui bono"
    }
  ],
  "word": "cui prodest"
}