"go up against" meaning in English

{
  "forms": [
    {
      "form": "goes up against",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "going up against",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "went up against",
      "tags": [
        "past"
      ]
    },
    {
      "form": "gone up against",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "go<goes,,went,gone> up against"
      },
      "expansion": "go up against (third-person singular simple present goes up against, present participle going up against, simple past went up against, past participle gone up against)",
      "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 phrasal verbs with particle (against)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs with particle (up)",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "May 27, 2007, Jamie Doward, The Observer.Jail head rejects shared cells plan.\nThe Director-General of the Prison Service is ready to go up against ministers by resisting any government plan to force more prisoners to share cells."
        }
      ],
      "glosses": [
        "To challenge someone."
      ],
      "id": "en-go_up_against-en-verb-zYrN3azS",
      "links": [
        [
          "challenge",
          "challenge"
        ]
      ]
    }
  ],
  "word": "go up against"
}

{
  "forms": [
    {
      "form": "goes up against",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "going up against",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "went up against",
      "tags": [
        "past"
      ]
    },
    {
      "form": "gone up against",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "go<goes,,went,gone> up against"
      },
      "expansion": "go up against (third-person singular simple present goes up against, present participle going up against, simple past went up against, past participle gone up against)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs with particle (against)",
        "English phrasal verbs with particle (up)",
        "English verbs"
      ],
      "examples": [
        {
          "text": "May 27, 2007, Jamie Doward, The Observer.Jail head rejects shared cells plan.\nThe Director-General of the Prison Service is ready to go up against ministers by resisting any government plan to force more prisoners to share cells."
        }
      ],
      "glosses": [
        "To challenge someone."
      ],
      "links": [
        [
          "challenge",
          "challenge"
        ]
      ]
    }
  ],
  "word": "go up against"
}