"muster up" meaning in English

{
  "forms": [
    {
      "form": "musters up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "mustering up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "mustered up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "mustered up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "muster up (third-person singular simple present musters up, present participle mustering up, simple past and past participle mustered up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "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 phrasal verbs formed with \"up\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "I mustered up all my remaining willpower.",
          "type": "example"
        },
        {
          "ref": "1846, Nathaniel Hawthorne, “P.'s Correspondence”, in Mosses from an Old Manse:",
          "text": "Nobody save myself so much as turned to look after him; nor, it grieves me to confess, could even I contrive to muster up any tolerable interest, even by all that the warlike spirit, formerly manifested within that now decrepit shape, had wrought upon our globe.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Look within oneself to summon a particular positive quality, such as strength, energy or courage."
      ],
      "id": "en-muster_up-en-verb-e0o-tw4n",
      "links": [
        [
          "summon",
          "summon"
        ],
        [
          "strength",
          "strength"
        ],
        [
          "energy",
          "energy"
        ],
        [
          "courage",
          "courage"
        ]
      ]
    }
  ],
  "word": "muster up"
}

{
  "forms": [
    {
      "form": "musters up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "mustering up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "mustered up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "mustered up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "muster up (third-person singular simple present musters up, present participle mustering up, simple past and past participle mustered up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs formed with \"up\"",
        "English terms with quotations",
        "English terms with usage examples",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "I mustered up all my remaining willpower.",
          "type": "example"
        },
        {
          "ref": "1846, Nathaniel Hawthorne, “P.'s Correspondence”, in Mosses from an Old Manse:",
          "text": "Nobody save myself so much as turned to look after him; nor, it grieves me to confess, could even I contrive to muster up any tolerable interest, even by all that the warlike spirit, formerly manifested within that now decrepit shape, had wrought upon our globe.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Look within oneself to summon a particular positive quality, such as strength, energy or courage."
      ],
      "links": [
        [
          "summon",
          "summon"
        ],
        [
          "strength",
          "strength"
        ],
        [
          "energy",
          "energy"
        ],
        [
          "courage",
          "courage"
        ]
      ]
    }
  ],
  "word": "muster up"
}