"sneak up" meaning in English

{
  "forms": [
    {
      "form": "sneaks up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "sneaking up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "sneaked up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "sneaked up",
      "tags": [
        "past"
      ]
    },
    {
      "form": "snuck up",
      "tags": [
        "US",
        "informal",
        "participle",
        "past"
      ]
    },
    {
      "form": "snuck up",
      "tags": [
        "US",
        "informal",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*",
        "past2": "snuck up",
        "past2_qual": "chiefly US, informal"
      },
      "expansion": "sneak up (third-person singular simple present sneaks up, present participle sneaking up, simple past and past participle sneaked up or (chiefly US, informal) snuck up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "text": "If you sneak up from behind like that, you'll give me a heart attack!",
          "type": "example"
        }
      ],
      "glosses": [
        "To approach a person or animal without being seen or heard"
      ],
      "id": "en-sneak_up-en-verb-~KUXZrVo",
      "links": [
        [
          "approach",
          "approach"
        ],
        [
          "seen",
          "seen"
        ],
        [
          "heard",
          "heard"
        ]
      ],
      "synonyms": [
        {
          "_dis1": "76 24",
          "word": "sneak up on"
        }
      ]
    },
    {
      "categories": [
        {
          "_dis": "41 59",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "32 68",
          "kind": "other",
          "name": "English phrasal verbs with particle (up)",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "Watch out for that brown liquor. It sneaks up on you quickly.",
          "type": "example"
        }
      ],
      "glosses": [
        "To deliver a sudden effect, often unexpectedly and without warning."
      ],
      "id": "en-sneak_up-en-verb-5hful~NC",
      "links": [
        [
          "deliver",
          "deliver"
        ],
        [
          "effect",
          "effect"
        ]
      ],
      "translations": [
        {
          "_dis1": "41 59",
          "code": "chr",
          "lang": "Cherokee",
          "roman": "ganoli",
          "sense": "to sneak up on",
          "word": "ᎦᏃᎵ"
        },
        {
          "_dis1": "41 59",
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "to sneak up on",
          "word": "偷偷走近"
        },
        {
          "_dis1": "41 59",
          "code": "de",
          "lang": "German",
          "sense": "to sneak up on",
          "word": "sich anschleichen"
        },
        {
          "_dis1": "41 59",
          "code": "la",
          "lang": "Latin",
          "sense": "to sneak up on",
          "word": "obrēpō"
        },
        {
          "_dis1": "41 59",
          "code": "la",
          "lang": "Latin",
          "sense": "to sneak up on",
          "word": "subeō"
        },
        {
          "_dis1": "41 59",
          "code": "pl",
          "lang": "Polish",
          "sense": "to sneak up on",
          "word": "skradać się"
        },
        {
          "_dis1": "41 59",
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "pidkradatysja",
          "sense": "to sneak up on",
          "word": "підкрадатися"
        }
      ]
    }
  ],
  "word": "sneak up"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English phrasal verbs",
    "English phrasal verbs with particle (up)",
    "English verbs"
  ],
  "forms": [
    {
      "form": "sneaks up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "sneaking up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "sneaked up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "sneaked up",
      "tags": [
        "past"
      ]
    },
    {
      "form": "snuck up",
      "tags": [
        "US",
        "informal",
        "participle",
        "past"
      ]
    },
    {
      "form": "snuck up",
      "tags": [
        "US",
        "informal",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*",
        "past2": "snuck up",
        "past2_qual": "chiefly US, informal"
      },
      "expansion": "sneak up (third-person singular simple present sneaks up, present participle sneaking up, simple past and past participle sneaked up or (chiefly US, informal) snuck up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "If you sneak up from behind like that, you'll give me a heart attack!",
          "type": "example"
        }
      ],
      "glosses": [
        "To approach a person or animal without being seen or heard"
      ],
      "links": [
        [
          "approach",
          "approach"
        ],
        [
          "seen",
          "seen"
        ],
        [
          "heard",
          "heard"
        ]
      ]
    },
    {
      "categories": [
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "Watch out for that brown liquor. It sneaks up on you quickly.",
          "type": "example"
        }
      ],
      "glosses": [
        "To deliver a sudden effect, often unexpectedly and without warning."
      ],
      "links": [
        [
          "deliver",
          "deliver"
        ],
        [
          "effect",
          "effect"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "sneak up on"
    }
  ],
  "translations": [
    {
      "code": "chr",
      "lang": "Cherokee",
      "roman": "ganoli",
      "sense": "to sneak up on",
      "word": "ᎦᏃᎵ"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "to sneak up on",
      "word": "偷偷走近"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "to sneak up on",
      "word": "sich anschleichen"
    },
    {
      "code": "la",
      "lang": "Latin",
      "sense": "to sneak up on",
      "word": "obrēpō"
    },
    {
      "code": "la",
      "lang": "Latin",
      "sense": "to sneak up on",
      "word": "subeō"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "to sneak up on",
      "word": "skradać się"
    },
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "pidkradatysja",
      "sense": "to sneak up on",
      "word": "підкрадатися"
    }
  ],
  "word": "sneak up"
}