"get one up on" meaning in English

{
  "forms": [
    {
      "form": "gets one up on",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "getting one up on",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "got one up on",
      "tags": [
        "past"
      ]
    },
    {
      "form": "got one up on",
      "tags": [
        "UK",
        "participle",
        "past"
      ]
    },
    {
      "form": "gotten one up on",
      "tags": [
        "US",
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "get<,,got,got􂀿UK􂁀:gotten􂀿US􂁀> one up on"
      },
      "expansion": "get one up on (third-person singular simple present gets one up on, present participle getting one up on, simple past got one up on, past participle (UK) got one up on or (US) gotten one up on)",
      "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 formed with \"on\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs formed with \"up\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2017 July 16, Brandon Nowalk, “Chickens and dragons come home to roost on Game Of Thrones (newbies)”, in The Onion AV Club:",
          "text": "So why not rob these red cloaks? Serves em right for letting their guard down. Isn’t that the unwritten law of the land? If someone gets one up on you, you deserve it for letting them?",
          "type": "quote"
        }
      ],
      "glosses": [
        "To outdo."
      ],
      "id": "en-get_one_up_on-en-verb-vENo6Q00",
      "links": [
        [
          "outdo",
          "outdo"
        ]
      ]
    }
  ],
  "word": "get one up on"
}

{
  "forms": [
    {
      "form": "gets one up on",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "getting one up on",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "got one up on",
      "tags": [
        "past"
      ]
    },
    {
      "form": "got one up on",
      "tags": [
        "UK",
        "participle",
        "past"
      ]
    },
    {
      "form": "gotten one up on",
      "tags": [
        "US",
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "get<,,got,got􂀿UK􂁀:gotten􂀿US􂁀> one up on"
      },
      "expansion": "get one up on (third-person singular simple present gets one up on, present participle getting one up on, simple past got one up on, past participle (UK) got one up on or (US) gotten one up on)",
      "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 formed with \"on\"",
        "English phrasal verbs formed with \"up\"",
        "English terms with quotations",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2017 July 16, Brandon Nowalk, “Chickens and dragons come home to roost on Game Of Thrones (newbies)”, in The Onion AV Club:",
          "text": "So why not rob these red cloaks? Serves em right for letting their guard down. Isn’t that the unwritten law of the land? If someone gets one up on you, you deserve it for letting them?",
          "type": "quote"
        }
      ],
      "glosses": [
        "To outdo."
      ],
      "links": [
        [
          "outdo",
          "outdo"
        ]
      ]
    }
  ],
  "word": "get one up on"
}