"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": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "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": "quotation"
        }
      ],
      "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-tempered"
        }
      ]
    }
  ],
  "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 entries with language name categories using raw markup",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English parasynthetic adjectives",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "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": "quotation"
        }
      ],
      "glosses": [
        "Calm and imperturbable, especially under pressure."
      ],
      "links": [
        [
          "Calm",
          "calm"
        ],
        [
          "imperturbable",
          "imperturbable"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "even-tempered"
    }
  ],
  "word": "cool-headed"
}