"spy on" meaning in English

{
  "forms": [
    {
      "form": "spies on",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "spying on",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "spied on",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "spied on",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "spy on (third-person singular simple present spies on, present participle spying on, simple past and past participle spied on)",
      "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 \"on\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Afrikaans translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Esperanto translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Galician translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Russian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Spanish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Ukrainian translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "To watch secretly or covertly; to surveil."
      ],
      "id": "en-spy_on-en-verb-quuxUahN",
      "links": [
        [
          "watch",
          "watch"
        ],
        [
          "surveil",
          "surveil"
        ]
      ],
      "related": [
        {
          "word": "eavesdrop"
        },
        {
          "word": "snoop"
        },
        {
          "word": "surveillance"
        }
      ],
      "translations": [
        {
          "code": "af",
          "lang": "Afrikaans",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "bespied"
        },
        {
          "code": "af",
          "lang": "Afrikaans",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "spioeneer"
        },
        {
          "code": "eo",
          "lang": "Esperanto",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "gvati"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "épier"
        },
        {
          "code": "gl",
          "lang": "Galician",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "aseitar"
        },
        {
          "code": "gl",
          "lang": "Galician",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "axexar"
        },
        {
          "code": "gl",
          "lang": "Galician",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "espreitar"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "ausspionieren"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "to watch secretly or covertly; to surveil",
          "tags": [
            "imperfective"
          ],
          "word": "szpiegować"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "špiónitʹ",
          "sense": "to watch secretly or covertly; to surveil",
          "tags": [
            "imperfective"
          ],
          "word": "шпио́нить"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "to watch secretly or covertly; to surveil",
          "word": "avizorar"
        },
        {
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "špyhuváty",
          "sense": "to watch secretly or covertly; to surveil",
          "tags": [
            "imperfective"
          ],
          "word": "шпигува́ти"
        }
      ]
    }
  ],
  "word": "spy on"
}

{
  "forms": [
    {
      "form": "spies on",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "spying on",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "spied on",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "spied on",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "spy on (third-person singular simple present spies on, present participle spying on, simple past and past participle spied on)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "eavesdrop"
    },
    {
      "word": "snoop"
    },
    {
      "word": "surveillance"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs formed with \"on\"",
        "English verbs",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Afrikaans translations",
        "Terms with Esperanto translations",
        "Terms with French translations",
        "Terms with Galician translations",
        "Terms with German translations",
        "Terms with Polish translations",
        "Terms with Russian translations",
        "Terms with Spanish translations",
        "Terms with Ukrainian translations"
      ],
      "glosses": [
        "To watch secretly or covertly; to surveil."
      ],
      "links": [
        [
          "watch",
          "watch"
        ],
        [
          "surveil",
          "surveil"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "af",
      "lang": "Afrikaans",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "bespied"
    },
    {
      "code": "af",
      "lang": "Afrikaans",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "spioeneer"
    },
    {
      "code": "eo",
      "lang": "Esperanto",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "gvati"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "épier"
    },
    {
      "code": "gl",
      "lang": "Galician",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "aseitar"
    },
    {
      "code": "gl",
      "lang": "Galician",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "axexar"
    },
    {
      "code": "gl",
      "lang": "Galician",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "espreitar"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "ausspionieren"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "to watch secretly or covertly; to surveil",
      "tags": [
        "imperfective"
      ],
      "word": "szpiegować"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "špiónitʹ",
      "sense": "to watch secretly or covertly; to surveil",
      "tags": [
        "imperfective"
      ],
      "word": "шпио́нить"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "to watch secretly or covertly; to surveil",
      "word": "avizorar"
    },
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "špyhuváty",
      "sense": "to watch secretly or covertly; to surveil",
      "tags": [
        "imperfective"
      ],
      "word": "шпигува́ти"
    }
  ],
  "word": "spy on"
}