"like a knife through butter" meaning in English

{
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
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          "name": "Entries with translation boxes",
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        },
        {
          "kind": "other",
          "name": "Mandarin terms with redundant transliterations",
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        },
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        {
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        },
        {
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          "name": "Polish links with redundant wikilinks",
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        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
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        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
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          "name": "Terms with Mandarin translations",
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        },
        {
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "With great ease and effectiveness."
      ],
      "id": "en-like_a_knife_through_butter-en-prep_phrase-SbgeepIo",
      "links": [
        [
          "ease",
          "ease"
        ],
        [
          "effectiveness",
          "effectiveness"
        ]
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(simile) With great ease and effectiveness."
      ],
      "synonyms": [
        {
          "word": "like a hot knife through butter"
        }
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "lang_code": "cmn",
          "roman": "yóurènyǒuyú",
          "sense": "with great ease",
          "word": "遊刃有餘 /游刃有余"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "lang_code": "fi",
          "sense": "with great ease",
          "word": "kuin kuuma veitsi voihin"
        },
        {
          "code": "de",
          "lang": "German",
          "lang_code": "de",
          "note": "only with verbs of cutting or passing through",
          "sense": "with great ease",
          "word": "wie durch Butter"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "lang_code": "pl",
          "sense": "with great ease",
          "word": "jak ryba w wodzie"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-like a knife through butter.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/a1/En-au-like_a_knife_through_butter.ogg/En-au-like_a_knife_through_butter.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/a/a1/En-au-like_a_knife_through_butter.ogg",
      "tags": [
        "Australia"
      ]
    }
  ],
  "word": "like a knife through butter"
}

{
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English similes",
        "Entries with translation boxes",
        "Mandarin terms with redundant transliterations",
        "Pages with 1 entry",
        "Pages with entries",
        "Polish links with redundant wikilinks",
        "Terms with Finnish translations",
        "Terms with German translations",
        "Terms with Mandarin translations",
        "Terms with Polish translations"
      ],
      "glosses": [
        "With great ease and effectiveness."
      ],
      "links": [
        [
          "ease",
          "ease"
        ],
        [
          "effectiveness",
          "effectiveness"
        ]
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(simile) With great ease and effectiveness."
      ],
      "synonyms": [
        {
          "word": "like a hot knife through butter"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-like a knife through butter.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/a1/En-au-like_a_knife_through_butter.ogg/En-au-like_a_knife_through_butter.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/a/a1/En-au-like_a_knife_through_butter.ogg",
      "tags": [
        "Australia"
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  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "lang_code": "cmn",
      "roman": "yóurènyǒuyú",
      "sense": "with great ease",
      "word": "遊刃有餘 /游刃有余"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "lang_code": "fi",
      "sense": "with great ease",
      "word": "kuin kuuma veitsi voihin"
    },
    {
      "code": "de",
      "lang": "German",
      "lang_code": "de",
      "note": "only with verbs of cutting or passing through",
      "sense": "with great ease",
      "word": "wie durch Butter"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "lang_code": "pl",
      "sense": "with great ease",
      "word": "jak ryba w wodzie"
    }
  ],
  "word": "like a knife through butter"
}