2.1 High-Frequency N4 Kanji & On/Kun Readings

2.1 High-Frequency N4 Kanji & On/Kun Readings

Quick Answer: The JLPT N4 is usually studied against an inventory of approximately 300 kanji (~180–200 newly introduced beyond N5). In Mondai 1 (Kanji Reading), test-takers must select the correct hiragana reading for an underlined kanji word. The core heuristic is straightforward: multi-kanji compounds (熟語, jukugo) generally use Onyomi (音読み, Chinese-derived), while standalone kanji and verbs/adjectives with attached okurigana use Kunyomi (訓読み, native Japanese). However, the exam specifically targets irregular readings (Jūbako-yomi, Yutō-yomi, Jukujikun) and phonological traps (long vowels, double consonants, voicing shifts).

Where the "300 kanji / 1,500 words" figure comes from — and why no list exists. The Japan Foundation and JEES stopped publishing Test Content Specifications when the test was revised in 2010, and say so explicitly: they decided that "publishing 'Test Content Specifications' containing a list of vocabulary, kanji and grammar items was not necessarily appropriate," because the test measures communicative competence rather than memorised lists. What they publish instead is the Summary of Linguistic Competence Required for Each Level, the Composition of test items, and Sample Questions. Every "N4 kanji list" and "N4 word list" in circulation — including the counts used in this guide — is therefore an unofficial reconstruction, most of it descended from the pre-2010 Level 3 specification and refined against released sample questions. Use those counts as a planning target, never as a guarantee of what will appear. The one thing the organisers do commit to for N4 is the competence descriptor: you can "read and understand passages on familiar daily topics written in basic vocabulary and kanji" and "listen and comprehend conversations encountered in daily life ... provided that they are spoken slowly."

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The N4 Kanji Inventory & The On/Kun Dichotomy

At the N4 level, kanji knowledge transitions from simple pictographs to functional literacy in compound words, notices, everyday conversations, and basic workplace terms. Successfully passing the Language Knowledge (Moji/Goi) section requires understanding why and when a kanji changes its pronunciation.

Kanji Reading Rule of Thumb:
┌─────────────────────────────────────────────────────────────┐
│ 1. Multi-Kanji Compound (Jukugo) ───────→ ONYOMI (音読み)     │
│    Example: 案内 (あん・ない), 計画 (けい・かく), 病院 (びょう・いん)│
├─────────────────────────────────────────────────────────────┤
│ 2. Kanji + Okurigana (Verbs/Adj) ──────→ KUNYOMI (訓読み)    │
│    Example: 待つ (ま・つ), 急ぐ (いそ・ぐ), 暗い (くら・い)     │
├─────────────────────────────────────────────────────────────┤
│ 3. Standalone Kanji Noun ──────────────→ KUNYOMI (訓読み)    │
│    Example: 声 (こえ), 家族の親 (おや), 頭 (あたま)          │
└─────────────────────────────────────────────────────────────┘

Essential Exceptions to the Rule

1. Standalone Kanji with Onyomi Readings: Certain high-frequency single kanji are read using their Onyomi even when appearing completely alone as nouns. Common N4 examples include:

   • 本 (ほん — book)
   • 肉 (にく — meat)
   • 駅 (えき — station)
   • 線 (せん — line/railway line)
   • 席 (せき — seat)
   • 薬 (やく in compounds, but くすり standalone; note differences!)

2. Compound Verbs Retaining Kunyomi Readings: When two native Japanese verbs combine into a compound verb, both kanji retain their Kunyomi readings:

   • 乗り換える (の・り・か・える — to transfer trains; 乗る + 換える)
   • 待ち合わせる (ま・ち・あ・わせる — to meet up; 待つ + 合わせる)
   • 貸し出す (か・し・だ・す — to lend out; 貸す + 出す)
   • 走り出す (は・し・り・だ・す — to start running; 走る + 出す)

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Special & Irregular Reading Combinations

JLPT N4 test writers heavily exploit irregular reading categories because they test whether a student has memorized whole vocabulary items rather than relying solely on automated guesswork.

1. Jūbako-yomi (重箱読み: ON + KUN)

In Jūbako-yomi compounds, the first kanji uses its Onyomi (Chinese reading) while the second kanji uses its Kunyomi (native Japanese reading). The name itself is an example: 重 (jū, ON) + 箱 (bako, KUN).

2. Yutō-yomi (湯桶読み: KUN + ON)

In Yutō-yomi compounds, the order is inverted: the first kanji uses its Kunyomi (native reading) while the second kanji uses its Onyomi (Chinese reading). The name comes from 湯 (yu, KUN) + 桶 (tō, ON).

3. Jukujikun (熟字訓: Assigned Semantic Readings)

Jukujikun are compound words where the pronunciation is assigned to the entire compound as a single holistic unit, rather than to individual kanji characters. You cannot divide the phonetic syllables between the kanji.

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High-Frequency N4 Kanji Thematic Inventory

The following master tables organize the most frequently tested N4 kanji across five core semantic categories, detailing both Onyomi and Kunyomi readings along with high-yield exam compounds.

Category 1: Movement, Transportation & Action Verbs

Category 2: Time, Seasons & Environment

Category 3: Social Life, Relations & Human Entities

Category 4: Daily Activities, Education & Commerce

Category 5: Physical States, Sensations & Body

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JLPT N4 Mondai 1: Phonological Traps & Test Tactics

In Mondai 1, questions present a sentence with an underlined kanji word and four hiragana options. Test writers construct options using specific phonological distortions:

Common Mondai 1 Distractor Archetypes:
  ┌───────────────┬───────────────────────────────┐
  │ Trap Type     │ Deceptive Distractor Pattern │
  ├───────────────┼───────────────────────────────┤
  │ 1. Chōon      │ Short vowel vs. Long vowel    │
  │ 2. Dakuon     │ Voiced (゛) vs. Unvoiced (゜) │
  │ 3. Sokuon     │ Double stop (っ) vs. full kana│
  │ 4. Rendaku    │ Unvoiced vs. Sequential voice │
  └───────────────┴───────────────────────────────┘

Trap 1: Chōon Traps (長音 — Long vs. Short Vowels)

Test writers frequently drop or add long vowel extensions (う or お):

• 工場: Correct is こうじょう (Distractors: こじょう, こうじょ, こじょ)
• 旅行: Correct is りょこう (Distractors: りょうこう, りょこ, りょうこ)
• 予定: Correct is よてい (Distractor: ようてい)
• 教室: Correct is きょうしつ (Distractor: きょしつ)
• 病院: Correct is びょういん (Distractor: びょいん — compare with 美容院 = びよういん)

Trap 2: Dakuon Traps (濁音・半濁音 — Voicing Shifts)

Distractors alternate between unvoiced and voiced syllables:

• 地理: Correct is ちり (Distractor: じり)
• 説明: Correct is せつめい (Distractor: ぜつめい)
• 家族: Correct is かぞく (Distractor: かそく)
• 禁煙: Correct is きんえん (Distractor: ぎんえん)
• 体: Correct is からだ (Distractor: がらだ)

Trap 3: Sokuon Traps (促音 — Small っ Geminate Consonant Stops)

When a kanji ending in つ/ち meets a kanji starting with か/さ/た/ぱ lines, the sound compresses into a small っ:

• 発表 (発 + 表): はつ + ひょう → はっぴょう (Distractor: はつひょう)
• 出発 (出 + 発): しゅつ + はつ → しゅっぱつ (Distractor: しゅつはつ)
• 日記 (日 + 記): にち + き → にっき (Distractor: にちき)
• 切手 (切 + 手): きり + て → きって (Distractor: きつて or きりて)
• 雑誌 (雑 + 誌): ざつ + し → ざっし (Distractor: ざつし)

Trap 4: Rendaku (連濁 — Sequential Voicing in Compound Nouns)

When two native words form a compound noun, the initial voiceless consonant of the second word often voices (k→g, s/sh→z/j, t/ch→d/z, h/f→b):

• 手 + 紙 → てがみ (tegami, NOT tekami)
• 本 + 棚 → ほんだな (hondana, NOT hontana)
• 花 + 火 → はなび (hanabi, NOT hanahi)
• 鼻 + 声 → はなごえ (hanagoe, NOT hanakoe)

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15-Second Mondai 1 Decision Protocol

When confronting a Mondai 1 item on the exam, execute this rapid 4-step protocol:

1. Step 1: Check Morphology (Compound vs. Standalone/Okurigana)
   • If the kanji is flanked by hiragana (e.g., 待つ, 広い), immediately recall the Kunyomi stem.
   • If it is a 2-kanji block (e.g., 計画, 案内), immediately recall the Onyomi components.
2. Step 2: Check for Irregular Flags
   • Scan for Jukujikun (今日 = きょう, 部屋 = へや) or Yutō/Jūbako hybrids (荷物 = にもつ, 番組 = ばんぐみ).
3. Step 3: Audit Syllable Length & Voicing
   • Ask: Does this kanji have an extended vowel (こう vs こ)? Does it trigger a glottal stop (っ)?
4. Step 4: Eliminate Distractor Impostors
   • Strike out options that alter voicing or drop/add unwanted long vowels. Select the target reading confidently within 15 seconds.