"uncheckered" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "un",
        "3": "checkered"
      },
      "expansion": "un- + checkered",
      "name": "prefix"
    }
  ],
  "etymology_text": "un- + checkered",
  "forms": [
    {
      "form": "more uncheckered",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most uncheckered",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "uncheckered (comparative more uncheckered, superlative most uncheckered)",
      "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": "other",
          "name": "English terms prefixed with un-",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Not checkered; constant, unvarying."
      ],
      "id": "en-uncheckered-en-adj-4Tjhn4Fu",
      "links": [
        [
          "checkered",
          "checkered"
        ],
        [
          "constant",
          "constant"
        ],
        [
          "unvarying",
          "unvarying"
        ]
      ],
      "synonyms": [
        {
          "word": "regular"
        },
        {
          "word": "unvaried"
        },
        {
          "word": "steady"
        },
        {
          "word": "unchequered"
        }
      ]
    }
  ],
  "word": "uncheckered"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "un",
        "3": "checkered"
      },
      "expansion": "un- + checkered",
      "name": "prefix"
    }
  ],
  "etymology_text": "un- + checkered",
  "forms": [
    {
      "form": "more uncheckered",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most uncheckered",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "uncheckered (comparative more uncheckered, superlative most uncheckered)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with un-"
      ],
      "glosses": [
        "Not checkered; constant, unvarying."
      ],
      "links": [
        [
          "checkered",
          "checkered"
        ],
        [
          "constant",
          "constant"
        ],
        [
          "unvarying",
          "unvarying"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "regular"
    },
    {
      "word": "unvaried"
    },
    {
      "word": "steady"
    },
    {
      "word": "unchequered"
    }
  ],
  "word": "uncheckered"
}