"нечасто" meaning in Russian

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "неча́стый",
        "3": "-о"
      },
      "expansion": "неча́стый (nečástyj) + -о (-o)",
      "name": "af"
    }
  ],
  "etymology_text": "неча́стый (nečástyj) + -о (-o)",
  "forms": [
    {
      "form": "неча́сто",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "nečásto",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "неча́сто"
      },
      "expansion": "неча́сто • (nečásto)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "antonyms": [
        {
          "word": "ча́сто"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian terms suffixed with -о",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "rarely, infrequently"
      ],
      "id": "en-нечасто-ru-adv-8RnCagLc",
      "links": [
        [
          "rarely",
          "rarely"
        ],
        [
          "infrequently",
          "infrequently"
        ]
      ],
      "related": [
        {
          "roman": "nečástyj",
          "word": "неча́стый"
        },
        {
          "roman": "částyj",
          "word": "ча́стый"
        },
        {
          "roman": "čášče",
          "word": "ча́ще"
        },
        {
          "roman": "častotá",
          "word": "частота́"
        },
        {
          "roman": "častótnyj",
          "word": "часто́тный"
        },
        {
          "roman": "častítʹ",
          "word": "части́ть"
        }
      ],
      "synonyms": [
        {
          "word": "ре́дко"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪˈt͡ɕastə]"
    }
  ],
  "word": "нечасто"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "неча́стый",
        "3": "-о"
      },
      "expansion": "неча́стый (nečástyj) + -о (-o)",
      "name": "af"
    }
  ],
  "etymology_text": "неча́стый (nečástyj) + -о (-o)",
  "forms": [
    {
      "form": "неча́сто",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "nečásto",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "неча́сто"
      },
      "expansion": "неча́сто • (nečásto)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "related": [
    {
      "roman": "nečástyj",
      "word": "неча́стый"
    },
    {
      "roman": "částyj",
      "word": "ча́стый"
    },
    {
      "roman": "čášče",
      "word": "ча́ще"
    },
    {
      "roman": "častotá",
      "word": "частота́"
    },
    {
      "roman": "častótnyj",
      "word": "часто́тный"
    },
    {
      "roman": "častítʹ",
      "word": "части́ть"
    }
  ],
  "senses": [
    {
      "antonyms": [
        {
          "word": "ча́сто"
        }
      ],
      "categories": [
        "Russian 3-syllable words",
        "Russian adverbs",
        "Russian entries with incorrect language header",
        "Russian lemmas",
        "Russian terms suffixed with -о",
        "Russian terms with IPA pronunciation"
      ],
      "glosses": [
        "rarely, infrequently"
      ],
      "links": [
        [
          "rarely",
          "rarely"
        ],
        [
          "infrequently",
          "infrequently"
        ]
      ],
      "synonyms": [
        {
          "word": "ре́дко"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪˈt͡ɕastə]"
    }
  ],
  "word": "нечасто"
}