"half empty" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "half empty (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"
        }
      ],
      "examples": [
        {
          "ref": "2023 November 1, Paul Clifton, “One account for the UK railway”, in RAIL, number 995, page 43",
          "text": "\"[…] But we shouldn't be charging a share of the main line costs to the half-empty trains on the Marlow branch. If the Marlow branch trains were cut because they don't pay, you'd still have to face all the costs of the main line, just without the extra passengers delivered by the Marlow branch.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of half full."
      ],
      "id": "en-half_empty-en-adj-53QbIEpU",
      "links": [
        [
          "half full",
          "half full#English"
        ]
      ],
      "related": [
        {
          "word": "glass-half-empty"
        },
        {
          "word": "the glass half-empty"
        }
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "half full"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "half empty"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "half empty (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "glass-half-empty"
    },
    {
      "word": "the glass half-empty"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "2023 November 1, Paul Clifton, “One account for the UK railway”, in RAIL, number 995, page 43",
          "text": "\"[…] But we shouldn't be charging a share of the main line costs to the half-empty trains on the Marlow branch. If the Marlow branch trains were cut because they don't pay, you'd still have to face all the costs of the main line, just without the extra passengers delivered by the Marlow branch.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of half full."
      ],
      "links": [
        [
          "half full",
          "half full#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "half full"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "half empty"
}