"sous-" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "la",
        "3": "sub"
      },
      "expansion": "Latin sub",
      "name": "uder"
    },
    {
      "args": {
        "1": "fr",
        "2": "fro",
        "3": "sus-"
      },
      "expansion": "Old French sus-",
      "name": "uder"
    },
    {
      "args": {
        "1": "la",
        "2": "subtus"
      },
      "expansion": "Latin subtus",
      "name": "cog"
    }
  ],
  "etymology_text": "From Latin sub, via Old French sus-, sous- (the spelling with s by analogy with the preposition sous < Latin subtus).",
  "head_templates": [
    {
      "args": {},
      "expansion": "sous-",
      "name": "fr-prefix"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "sub-; under-"
      ],
      "id": "en-sous--fr-prefix-jq1m6Qlh",
      "links": [
        [
          "sub-",
          "sub-"
        ],
        [
          "under-",
          "under-"
        ]
      ],
      "synonyms": [
        {
          "word": "sou-"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/su/"
    },
    {
      "ipa": "/su.z‿/"
    }
  ],
  "word": "sous-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "la",
        "3": "sub"
      },
      "expansion": "Latin sub",
      "name": "uder"
    },
    {
      "args": {
        "1": "fr",
        "2": "fro",
        "3": "sus-"
      },
      "expansion": "Old French sus-",
      "name": "uder"
    },
    {
      "args": {
        "1": "la",
        "2": "subtus"
      },
      "expansion": "Latin subtus",
      "name": "cog"
    }
  ],
  "etymology_text": "From Latin sub, via Old French sus-, sous- (the spelling with s by analogy with the preposition sous < Latin subtus).",
  "head_templates": [
    {
      "args": {},
      "expansion": "sous-",
      "name": "fr-prefix"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "French 1-syllable words",
        "French entries with incorrect language header",
        "French lemmas",
        "French prefixes",
        "French terms derived from Latin",
        "French terms derived from Old French",
        "French terms with IPA pronunciation",
        "French undefined derivations",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "glosses": [
        "sub-; under-"
      ],
      "links": [
        [
          "sub-",
          "sub-"
        ],
        [
          "under-",
          "under-"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/su/"
    },
    {
      "ipa": "/su.z‿/"
    }
  ],
  "synonyms": [
    {
      "word": "sou-"
    }
  ],
  "word": "sous-"
}