"seal the deal" meaning in English

{
  "forms": [
    {
      "form": "seals the deal",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "sealing the deal",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "sealed the deal",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "sealed the deal",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "seal the deal (third-person singular simple present seals the deal, present participle sealing the deal, simple past and past participle sealed the deal)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "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 entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2014 August 26, Jamie Jackson, “Ángel di María says Manchester United were the ‘only club’ after Real”, in The Guardian",
          "text": "After completing a medical and the requisite paperwork on Tuesday to seal the deal, Di María said: “I am absolutely delighted to be joining Manchester United. I have thoroughly enjoyed my time in Spain and there were a lot of clubs interested in me, but United is the only club that I would have left Real Madrid for.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To come to an agreement; to finalise the deal."
      ],
      "id": "en-seal_the_deal-en-verb-imkKa3YO",
      "links": [
        [
          "agreement",
          "agreement"
        ],
        [
          "deal",
          "deal"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To come to an agreement; to finalise the deal."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-seal the deal.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f9/En-au-seal_the_deal.ogg/En-au-seal_the_deal.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f9/En-au-seal_the_deal.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "seal the deal"
}

{
  "forms": [
    {
      "form": "seals the deal",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "sealing the deal",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "sealed the deal",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "sealed the deal",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "seal the deal (third-person singular simple present seals the deal, present participle sealing the deal, simple past and past participle sealed the deal)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English rhyming phrases",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "English verbs"
      ],
      "examples": [
        {
          "ref": "2014 August 26, Jamie Jackson, “Ángel di María says Manchester United were the ‘only club’ after Real”, in The Guardian",
          "text": "After completing a medical and the requisite paperwork on Tuesday to seal the deal, Di María said: “I am absolutely delighted to be joining Manchester United. I have thoroughly enjoyed my time in Spain and there were a lot of clubs interested in me, but United is the only club that I would have left Real Madrid for.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To come to an agreement; to finalise the deal."
      ],
      "links": [
        [
          "agreement",
          "agreement"
        ],
        [
          "deal",
          "deal"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To come to an agreement; to finalise the deal."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-seal the deal.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f9/En-au-seal_the_deal.ogg/En-au-seal_the_deal.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f9/En-au-seal_the_deal.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "seal the deal"
}