"deeply" meaning in English

{
  "categories": [
    {
      "kind": "other",
      "name": "Terms suffixed with -ly",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "deep",
        "2": "ly"
      },
      "expansion": "deep + -ly",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "deep + -ly",
  "hyphenation": "deep‧ly",
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "examples": [
        {
          "text": "I am deeply concerned about this matter."
        },
        {
          "text": "I deeply regret my behaviour."
        },
        {
          "text": "The surface of the planet was deeply cratered."
        }
      ],
      "glosses": [
        "If something is deeply rooted, felt, held, etc., it is done to a deep extent or degree."
      ],
      "id": "simple-deeply-en-adv-RZviCCIj",
      "synonyms": [
        {
          "word": "seriously"
        },
        {
          "word": "sincerely"
        }
      ]
    },
    {
      "examples": [
        {
          "text": "In this part of the river salmon swim deeply."
        }
      ],
      "glosses": [
        "If something moves deeply it moves to or at depth."
      ],
      "id": "simple-deeply-en-adv-VMVHvB9-"
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdiːpli/"
    },
    {
      "audio": "en-us-deeply.ogg",
      "raw_tags": [
        "Audio"
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "deeply"
}

{
  "categories": [
    "Terms suffixed with -ly"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "deep",
        "2": "ly"
      },
      "expansion": "deep + -ly",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "deep + -ly",
  "hyphenation": "deep‧ly",
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "examples": [
        {
          "text": "I am deeply concerned about this matter."
        },
        {
          "text": "I deeply regret my behaviour."
        },
        {
          "text": "The surface of the planet was deeply cratered."
        }
      ],
      "glosses": [
        "If something is deeply rooted, felt, held, etc., it is done to a deep extent or degree."
      ],
      "synonyms": [
        {
          "word": "seriously"
        },
        {
          "word": "sincerely"
        }
      ]
    },
    {
      "examples": [
        {
          "text": "In this part of the river salmon swim deeply."
        }
      ],
      "glosses": [
        "If something moves deeply it moves to or at depth."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdiːpli/"
    },
    {
      "audio": "en-us-deeply.ogg",
      "raw_tags": [
        "Audio"
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "deeply"
}