JAPANESE STUDY SYSTEMKOTOWA 词和
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SILVER ERA · ことばを、少しずつ。
JLPT BANDN5 BEGINNER → N1 ADVANCED

一いっ変ぺん

N1
いっぺん ippen
  1. complete change
  2. about-face
nounする verbtransitiveintransitive

Chinese meanings

骤变;完全改变

Examples

  • 夫ふ妻さいは化か学がくを近きん代だい科か学がくへと一いっ変ぺんさせた。
    The couple transformed chemistry into a modern science.
    这对夫妇把化学彻底变成了现代科学。
  • 新しい駅ができて町の様子は一変した。
    The town changed completely when a new station was built.
    新车站建成后,城镇面貌焕然一新。
  • 彼の表情が一変した。
    His expression changed completely.
    他的表情骤然改变。
Use this entry in code
import { getVocabById } from 'kotowa';
getVocabById('17cdd2798b'); // 一変
{
  "id": "17cdd2798b",
  "word": "一変",
  "reading": "いっぺん",
  "romaji": "ippen",
  "meanings": [
    "complete change",
    "about-face"
  ],
  "level": "N1",
  "pos": [
    "n",
    "vs",
    "vt",
    "vi"
  ],
  "jmdict_id": 1166420,
  "examples": [
    {
      "ja": "夫妻は化学を近代科学へと一変させた。",
      "furigana": "{夫妻|ふさい}は{化学|かがく}を{近代科学|きんだいかがく}へと{一変|いっぺん}させた。",
      "en": "The couple transformed chemistry into a modern science.",
      "tatoeba_id": 84983
    },
    {
      "ja": "新しい駅ができて町の様子は一変した。",
      "en": "The town changed completely when a new station was built."
    },
    {
      "ja": "彼の表情が一変した。",
      "en": "His expression changed completely."
    }
  ],
  "zh": {
    "source_hash": "9ccdb92a7047b066389ebc586dff902d090a4496b6513a2b29668afd8b1a3745",
    "meanings": [
      "骤变",
      "完全改变"
    ],
    "examples": [
      {
        "ja": "夫妻は化学を近代科学へと一変させた。",
        "zh": "这对夫妇把化学彻底变成了现代科学。"
      },
      {
        "ja": "新しい駅ができて町の様子は一変した。",
        "zh": "新车站建成后,城镇面貌焕然一新。"
      },
      {
        "ja": "彼の表情が一変した。",
        "zh": "他的表情骤然改变。"
      }
    ],
    "references": [
      "upstream vocab/n1/17cdd2798b",
      "JMdict ent_seq 1166420; checked against downloaded JMdict_e.gz on 2026-10-28",
      "Original Chinese authored and reviewed by Codex; no independent human review"
    ],
    "review_hash": "15186b343dcdd616f2736a221fa5807a09f4fe25611f8b57eb9138dbc7b3ad3b",
    "status": "reviewed",
    "reviewer": "Codex",
    "review_method": "ai",
    "reviewed_at": "2026-10-28"
  }
}