"forthen" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "forthen"
      },
      "expansion": "Middle English forthen",
      "name": "inh"
    },
    {
      "args": {
        "1": "en",
        "2": "ang",
        "3": "forþon"
      },
      "expansion": "Old English forþon",
      "name": "inh"
    }
  ],
  "etymology_text": "From Middle English forthen, from Old English forþon, furþon, furþum (“even, exactly, quite, already, just as, at first, further, previously”), from forþ (“forth”). More at forth.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "forthen (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Also; even."
      ],
      "id": "en-forthen-en-adv-ys1HcQ7x",
      "links": [
        [
          "Also",
          "also"
        ],
        [
          "even",
          "even"
        ]
      ],
      "raw_glosses": [
        "(obsolete) Also; even."
      ],
      "tags": [
        "not-comparable",
        "obsolete"
      ]
    }
  ],
  "word": "forthen"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "forthen"
      },
      "expansion": "Middle English forthen",
      "name": "inh"
    },
    {
      "args": {
        "1": "en",
        "2": "ang",
        "3": "forþon"
      },
      "expansion": "Old English forþon",
      "name": "inh"
    }
  ],
  "etymology_text": "From Middle English forthen, from Old English forþon, furþon, furþum (“even, exactly, quite, already, just as, at first, further, previously”), from forþ (“forth”). More at forth.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "forthen (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms derived from Middle English",
        "English terms derived from Old English",
        "English terms inherited from Middle English",
        "English terms inherited from Old English",
        "English terms with obsolete senses",
        "English uncomparable adverbs"
      ],
      "glosses": [
        "Also; even."
      ],
      "links": [
        [
          "Also",
          "also"
        ],
        [
          "even",
          "even"
        ]
      ],
      "raw_glosses": [
        "(obsolete) Also; even."
      ],
      "tags": [
        "not-comparable",
        "obsolete"
      ]
    }
  ],
  "word": "forthen"
}