"flat adverb" meaning in English

{
  "forms": [
    {
      "form": "flat adverbs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flat adverb (plural flat adverbs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Grammar",
          "orig": "en:Grammar",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An adverb which has the same form as the corresponding adjective (sometimes associated with informal or dialectal speech)."
      ],
      "id": "en-flat_adverb-en-noun-WEspjBem",
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "adverb",
          "adverb#Noun"
        ],
        [
          "adjective",
          "adjective#Noun"
        ],
        [
          "informal",
          "informal#Adjective"
        ],
        [
          "dialectal",
          "dialectal#Adjective"
        ]
      ],
      "raw_glosses": [
        "(grammar) An adverb which has the same form as the corresponding adjective (sometimes associated with informal or dialectal speech)."
      ],
      "synonyms": [
        {
          "word": "bare adverb"
        },
        {
          "word": "simple adverb"
        }
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "word": "flat adverb"
}

{
  "forms": [
    {
      "form": "flat adverbs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flat adverb (plural flat adverbs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Grammar"
      ],
      "glosses": [
        "An adverb which has the same form as the corresponding adjective (sometimes associated with informal or dialectal speech)."
      ],
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "adverb",
          "adverb#Noun"
        ],
        [
          "adjective",
          "adjective#Noun"
        ],
        [
          "informal",
          "informal#Adjective"
        ],
        [
          "dialectal",
          "dialectal#Adjective"
        ]
      ],
      "raw_glosses": [
        "(grammar) An adverb which has the same form as the corresponding adjective (sometimes associated with informal or dialectal speech)."
      ],
      "synonyms": [
        {
          "word": "bare adverb"
        },
        {
          "word": "simple adverb"
        }
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "word": "flat adverb"
}