"subadequate" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "sub",
        "3": "adequate"
      },
      "expansion": "sub- + adequate",
      "name": "pre"
    }
  ],
  "etymology_text": "From sub- + adequate.",
  "forms": [
    {
      "form": "more subadequate",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most subadequate",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "subadequate (comparative more subadequate, superlative most subadequate)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "antonyms": [
        {
          "word": "adequate"
        },
        {
          "word": "superadequate"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with sub-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Less than adequate."
      ],
      "id": "en-subadequate-en-adj-FBa8KMYw",
      "synonyms": [
        {
          "word": "inadequate"
        }
      ]
    }
  ],
  "word": "subadequate"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "sub",
        "3": "adequate"
      },
      "expansion": "sub- + adequate",
      "name": "pre"
    }
  ],
  "etymology_text": "From sub- + adequate.",
  "forms": [
    {
      "form": "more subadequate",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most subadequate",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "subadequate (comparative more subadequate, superlative most subadequate)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "antonyms": [
        {
          "word": "adequate"
        },
        {
          "word": "superadequate"
        }
      ],
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with sub-",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Less than adequate."
      ],
      "synonyms": [
        {
          "word": "inadequate"
        }
      ]
    }
  ],
  "word": "subadequate"
}