"arduous" meaning in 英語

{
  "categories": [
    {
      "kind": "other",
      "name": "テンプレート:pronに引数が用いられているページ",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "国際音声記号あり",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語_ラテン語由来",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語_形容詞",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "ラテン語arduus"
  ],
  "forms": [
    {
      "form": "more arduous"
    },
    {
      "form": "most arduous"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "adj",
  "pos_title": "形容詞",
  "senses": [
    {
      "glosses": [
        "困難な。難儀な。"
      ],
      "id": "ja-arduous-en-adj-VlaqPn8o"
    }
  ],
  "sounds": [
    {
      "ipa": "ˈɑːdjuəs"
    },
    {
      "ipa": "ˈɑːɹd͡ʒuəs"
    }
  ],
  "synonyms": [
    {
      "word": "burdensome"
    },
    {
      "word": "demanding"
    },
    {
      "word": "exhausting"
    },
    {
      "word": "fatiguing"
    },
    {
      "word": "laborious"
    },
    {
      "word": "onerous"
    },
    {
      "word": "strenuous"
    },
    {
      "word": "wearisome"
    }
  ],
  "word": "arduous"
}

{
  "categories": [
    "テンプレート:pronに引数が用いられているページ",
    "国際音声記号あり",
    "英語",
    "英語_ラテン語由来",
    "英語_形容詞"
  ],
  "etymology_texts": [
    "ラテン語arduus"
  ],
  "forms": [
    {
      "form": "more arduous"
    },
    {
      "form": "most arduous"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "adj",
  "pos_title": "形容詞",
  "senses": [
    {
      "glosses": [
        "困難な。難儀な。"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "ˈɑːdjuəs"
    },
    {
      "ipa": "ˈɑːɹd͡ʒuəs"
    }
  ],
  "synonyms": [
    {
      "word": "burdensome"
    },
    {
      "word": "demanding"
    },
    {
      "word": "exhausting"
    },
    {
      "word": "fatiguing"
    },
    {
      "word": "laborious"
    },
    {
      "word": "onerous"
    },
    {
      "word": "strenuous"
    },
    {
      "word": "wearisome"
    }
  ],
  "word": "arduous"
}