"cool-headed" meaning in English

{
  "forms": [
    {
      "form": "more cool-headed",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most cool-headed",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cool-headed (comparative more cool-headed, superlative most cool-headed)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "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": "Emotions",
          "orig": "en:Emotions",
          "parents": [
            "Mind",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Personality",
          "orig": "en:Personality",
          "parents": [
            "Mind",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "cool-headedness"
        }
      ],
      "examples": [
        {
          "ref": "2014 September 23, A teacher, “Choosing a primary school: a teacher's guide for parents”, in The Guardian:",
          "text": "The best headteachers are like submarine captains – cool-headed, astute decision-makers – who trust their colleagues and surroundings to indicate where their ship is headed.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Calm and imperturbable, especially under pressure."
      ],
      "id": "en-cool-headed-en-adj-vn9kr7eV",
      "links": [
        [
          "Calm",
          "calm"
        ],
        [
          "imperturbable",
          "imperturbable"
        ]
      ],
      "related": [
        {
          "word": "cool head"
        },
        {
          "word": "cool heads will prevail"
        }
      ],
      "synonyms": [
        {
          "word": "even-keeled"
        },
        {
          "word": "even-tempered"
        },
        {
          "word": "level-headed"
        },
        {
          "word": "calm"
        }
      ]
    }
  ],
  "word": "cool-headed"
}

{
  "derived": [
    {
      "word": "cool-headedness"
    }
  ],
  "forms": [
    {
      "form": "more cool-headed",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most cool-headed",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cool-headed (comparative more cool-headed, superlative most cool-headed)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "cool head"
    },
    {
      "word": "cool heads will prevail"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English parasynthetic adjectives",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Emotions",
        "en:Personality"
      ],
      "examples": [
        {
          "ref": "2014 September 23, A teacher, “Choosing a primary school: a teacher's guide for parents”, in The Guardian:",
          "text": "The best headteachers are like submarine captains – cool-headed, astute decision-makers – who trust their colleagues and surroundings to indicate where their ship is headed.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Calm and imperturbable, especially under pressure."
      ],
      "links": [
        [
          "Calm",
          "calm"
        ],
        [
          "imperturbable",
          "imperturbable"
        ]
      ],
      "synonyms": [
        {
          "word": "even-keeled"
        },
        {
          "word": "even-tempered"
        },
        {
          "word": "level-headed"
        },
        {
          "word": "calm"
        }
      ]
    }
  ],
  "word": "cool-headed"
}