"mosten" meaning in Middle English

{
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "verb form"
      },
      "expansion": "mosten",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Middle English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "to have to",
          "word": "moten"
        }
      ],
      "glosses": [
        "plural present/past indicative/subjunctive of moten (“to have to”)"
      ],
      "id": "en-mosten-enm-verb-IZ0Mqwd1",
      "links": [
        [
          "moten",
          "moten#Middle_English:_to_have_to"
        ]
      ],
      "synonyms": [
        {
          "word": "moste"
        },
        {
          "word": "muste"
        },
        {
          "word": "musten"
        }
      ],
      "tags": [
        "form-of",
        "indicative",
        "past",
        "plural",
        "present",
        "subjunctive"
      ]
    }
  ],
  "word": "mosten"
}

{
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "verb form"
      },
      "expansion": "mosten",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Middle English entries with incorrect language header",
        "Middle English non-lemma forms",
        "Middle English plural forms",
        "Middle English plural past forms",
        "Middle English plural subjunctive forms",
        "Middle English verb forms",
        "Pages with 4 entries",
        "Pages with entries"
      ],
      "form_of": [
        {
          "extra": "to have to",
          "word": "moten"
        }
      ],
      "glosses": [
        "plural present/past indicative/subjunctive of moten (“to have to”)"
      ],
      "links": [
        [
          "moten",
          "moten#Middle_English:_to_have_to"
        ]
      ],
      "tags": [
        "form-of",
        "indicative",
        "past",
        "plural",
        "present",
        "subjunctive"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "moste"
    },
    {
      "word": "muste"
    },
    {
      "word": "musten"
    }
  ],
  "word": "mosten"
}