"darken" meaning in English

{
  "categories": [
    {
      "kind": "other",
      "name": "Terms suffixed with -en",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "dark",
        "2": "en"
      },
      "expansion": "dark + -en",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "dark + -en",
  "forms": [
    {
      "form": "darken",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "darkens",
      "tags": [
        "third-person",
        "singular"
      ]
    },
    {
      "form": "darkened",
      "tags": [
        "past"
      ]
    },
    {
      "form": "darkened",
      "tags": [
        "past",
        "participle"
      ]
    },
    {
      "form": "darkening",
      "tags": [
        "present",
        "participle"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "antonyms": [
        {
          "word": "lighten"
        }
      ],
      "categories": [],
      "examples": [
        {
          "text": "In the evening, he went walking and watched the sky darken."
        },
        {
          "text": "She darkened the lights and sat quietly."
        }
      ],
      "glosses": [
        "If something darkens, there is less light."
      ],
      "id": "simple-darken-en-verb-V8hFoZLh",
      "raw_tags": [
        "transitive & intransitive"
      ],
      "synonyms": [
        {
          "word": "dim"
        }
      ]
    },
    {
      "antonyms": [
        {
          "word": "lighten"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Verbs",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "As he told her the story, he could see her face darken."
        }
      ],
      "glosses": [
        "If your mood, face, or eyes darkens, you become less happy."
      ],
      "id": "simple-darken-en-verb-LTG59Wy0",
      "raw_tags": [
        "intransitive"
      ],
      "synonyms": [
        {
          "word": "anger"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdɑrkən/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈdɑːkən/",
      "tags": [
        "UK"
      ]
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-darken.wav",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "darken"
}

{
  "categories": [
    "Terms suffixed with -en"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "dark",
        "2": "en"
      },
      "expansion": "dark + -en",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "dark + -en",
  "forms": [
    {
      "form": "darken",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "darkens",
      "tags": [
        "third-person",
        "singular"
      ]
    },
    {
      "form": "darkened",
      "tags": [
        "past"
      ]
    },
    {
      "form": "darkened",
      "tags": [
        "past",
        "participle"
      ]
    },
    {
      "form": "darkening",
      "tags": [
        "present",
        "participle"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "antonyms": [
        {
          "word": "lighten"
        }
      ],
      "categories": [
        "Intransitive verbs",
        "Transitive verbs"
      ],
      "examples": [
        {
          "text": "In the evening, he went walking and watched the sky darken."
        },
        {
          "text": "She darkened the lights and sat quietly."
        }
      ],
      "glosses": [
        "If something darkens, there is less light."
      ],
      "raw_tags": [
        "transitive & intransitive"
      ],
      "synonyms": [
        {
          "word": "dim"
        }
      ]
    },
    {
      "antonyms": [
        {
          "word": "lighten"
        }
      ],
      "categories": [
        "Intransitive verbs",
        "Verbs"
      ],
      "examples": [
        {
          "text": "As he told her the story, he could see her face darken."
        }
      ],
      "glosses": [
        "If your mood, face, or eyes darkens, you become less happy."
      ],
      "raw_tags": [
        "intransitive"
      ],
      "synonyms": [
        {
          "word": "anger"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdɑrkən/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈdɑːkən/",
      "tags": [
        "UK"
      ]
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-darken.wav",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "darken"
}