"post festum" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions adverbiales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en français issus d’un mot en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du latin post festum."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "adv",
  "pos_title": "Locution adverbiale",
  "related": [
    {
      "word": "post hoc"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Après coup ou trop tard."
      ],
      "id": "fr-post_festum-fr-adv-XkX8ib~Z"
    }
  ],
  "word": "post festum"
}

{
  "categories": [
    "Locutions adverbiales en français",
    "Mots en français issus d’un mot en latin",
    "français"
  ],
  "etymology_texts": [
    "Du latin post festum."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "adv",
  "pos_title": "Locution adverbiale",
  "related": [
    {
      "word": "post hoc"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Après coup ou trop tard."
      ]
    }
  ],
  "word": "post festum"
}