"πόσο μάλλον" meaning in Greek

{
  "forms": [
    {
      "form": "póso mállon",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "phrase",
        "head": "πόσο μάλλον"
      },
      "expansion": "πόσο μάλλον • (póso mállon)",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "let alone, to say nothing of"
      ],
      "id": "en-πόσο_μάλλον-el-phrase-aaU2qGCx",
      "links": [
        [
          "let alone",
          "let alone"
        ]
      ]
    }
  ],
  "word": "πόσο μάλλον"
}

{
  "forms": [
    {
      "form": "póso mállon",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "phrase",
        "head": "πόσο μάλλον"
      },
      "expansion": "πόσο μάλλον • (póso mállon)",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Greek entries with incorrect language header",
        "Greek lemmas",
        "Greek multiword terms",
        "Greek phrases"
      ],
      "glosses": [
        "let alone, to say nothing of"
      ],
      "links": [
        [
          "let alone",
          "let alone"
        ]
      ]
    }
  ],
  "word": "πόσο μάλλον"
}