"not up" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "not up (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Tennis",
          "orig": "en:Tennis",
          "parents": [
            "Ball games",
            "Racquet sports",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Of the ball, having bounced twice. Usually called by the umpire in situations where it is unclear if the ball has bounced a second time to indicate to the players and spectators that the point is over."
      ],
      "id": "en-not_up-en-adj-RWNyqFYE",
      "links": [
        [
          "tennis",
          "tennis"
        ],
        [
          "umpire",
          "umpire"
        ]
      ],
      "raw_glosses": [
        "(tennis) Of the ball, having bounced twice. Usually called by the umpire in situations where it is unclear if the ball has bounced a second time to indicate to the players and spectators that the point is over."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports",
        "tennis"
      ]
    }
  ],
  "word": "not up"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "not up (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English uncomparable adjectives",
        "en:Tennis"
      ],
      "glosses": [
        "Of the ball, having bounced twice. Usually called by the umpire in situations where it is unclear if the ball has bounced a second time to indicate to the players and spectators that the point is over."
      ],
      "links": [
        [
          "tennis",
          "tennis"
        ],
        [
          "umpire",
          "umpire"
        ]
      ],
      "raw_glosses": [
        "(tennis) Of the ball, having bounced twice. Usually called by the umpire in situations where it is unclear if the ball has bounced a second time to indicate to the players and spectators that the point is over."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports",
        "tennis"
      ]
    }
  ],
  "word": "not up"
}