English Vocabulary · Grade 9 Live Review Preview
9th Grade Vocabulary Words
Ninth grade marks the transition to high-school reading and writing across literature, argument, research, biology, physical and Earth science, algebra, computing, world history, civics, and geography. This level develops precise academic and domain-specific vocabulary while strengthening context, nuance, source evaluation, figurative language, and evidence-based communication.
This independently authored 800-word beta curriculum is arranged in twenty-three pages of up to thirty-five words. Pages containing words 1–500 include five cloze questions drawn only from that enhanced range; words 501–800 remain fully visible and editable as list pages while the expanded practice layer is developed. Each row includes a subject-field label and an editable word-study note about a transparent affix, compound structure, capitalization, or dictionary base form. The cited Grade 9 resources calibrate difficulty and study skills only; all learner-facing definitions, examples, quizzes, and descriptions are original KSSR copy.
Please note: the vocabulary lists for grades 9~11 have been selected to ensure no overlap with the previous grade level. If the words are too specialized or difficult for you, please go back to grade levels 4~8 and review the words on those pages.
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| # | Word | Details | Meaning | Sample sentence |
|---|---|---|---|---|
| 561 | mobilization | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Suffix focus: -ization forms a noun for a process of making or becoming. | 動員 | Railways accelerated military mobilization. |
| 562 | total war | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: total + war. Study the complete expression as one field-specific unit. | 1. 国家総力戦 2. 総力戦 | During total war, governments rationed food and converted factories to weapons production. |
| 563 | trench warfare | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: trench + warfare. Study the complete expression as one field-specific unit. | 塹壕戦 | Trench warfare on the Western Front produced long stalemates and heavy casualties. |
| 564 | self-determination | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: self + determination. Study the complete expression as one field-specific unit. | 自己決定 | Nationalists appealed to self-determination after the empire collapsed. |
| 565 | collective security | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: collective + security. Study the complete expression as one field-specific unit. | 集団安全保障 | Collective security depends on members acting when another state is attacked. |
| 566 | League of Nations | proper noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: League + of + Nations. Study the complete expression as one field-specific unit. | 国際連盟 | The League of Nations lacked its own armed force. |
| 567 | Treaty of Versailles | proper noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: Treaty + of + Versailles. Study the complete expression as one field-specific unit. | ベルサイユ条約 | The Treaty of Versailles imposed territorial losses and reparations on Germany. |
| 568 | Nazism | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Capitalization focus: Nazism is conventionally capitalized as the name of a specific political ideology. | ナチズム | Nazism destroyed democratic institutions and pursued genocidal policies. |
| 569 | Holocaust | proper noun StudyField: Grade 9 world-history, civics, and geography term Word study: Capitalization focus: this is a proper name, so its standard written form begins with a capital letter. | ホロコースト | Holocaust remembrance preserves evidence and honors the people who were murdered. |
| 570 | Axis Powers | proper noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: Axis + Powers. Study the complete expression as one field-specific unit. | 枢軸国 | The Axis Powers pursued expansion across Europe, Africa, and Asia. |
| 571 | Allied Powers | proper noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: Allied + Powers. Study the complete expression as one field-specific unit. | 連合国 | The Allied Powers coordinated military campaigns despite differing political systems. |
| 572 | appeasement policy | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: appeasement + policy. Study the complete expression as one field-specific unit. | 宥和政策 | The appeasement policy failed to stop further territorial demands. |
| 573 | Cold War | proper noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: Cold + War. Study the complete expression as one field-specific unit. | 1. 米ソ冷戦 2. 冷戦 | The Cold War involved ideological competition, proxy conflicts, and nuclear tension. |
| 574 | containment policy | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: containment + policy. Study the complete expression as one field-specific unit. | 封じ込め政策 | The United States adopted containment policy toward Soviet influence. |
| 575 | proxy war | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: proxy + war. Study the complete expression as one field-specific unit. | 代理戦争 | The regional civil war became a proxy war when rival powers supplied weapons. |
| 576 | arms race | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: arms + race. Study the complete expression as one field-specific unit. | 1. 軍備拡張競争 2. 軍拡競争 | The nuclear arms race produced enormous arsenals. |
| 577 | nuclear deterrence | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: nuclear + deterrence. Study the complete expression as one field-specific unit. | 核抑止力 | Nuclear deterrence depends on an opponent believing retaliation is possible. |
| 578 | decolonization | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Suffix focus: -ization forms a noun for a process of making or becoming. | 脱植民地化 | Decolonization created many new states after World War II. |
| 579 | nonaligned movement | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: nonaligned + movement. Study the complete expression as one field-specific unit. | 非整列運動 | The nonaligned movement promoted sovereignty and anti-colonial cooperation. |
| 580 | United Nations | proper noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: United + Nations. Study the complete expression as one field-specific unit. | 1. 国際連合 2. 国連 3. ユーエヌ | The United Nations coordinates humanitarian relief through specialized agencies. |
| 581 | Universal Declaration of Human Rights | proper noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: Universal + Declaration + of + Human + Rights. Study the complete expression as one field-specific unit. | 世界人権宣言 | The Universal Declaration of Human Rights includes freedom of thought and equal protection. |
| 582 | human rights | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: human + rights. Study the complete expression as one field-specific unit. | 人権 | Freedom from torture is a human rights principle. |
| 583 | civil society | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: civil + society. Study the complete expression as one field-specific unit. | 市民社会 | Independent charities and community groups are part of civil society. |
| 584 | political legitimacy | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: political + legitimacy. Study the complete expression as one field-specific unit. | 政治的正当性 | Transparent procedures can increase political legitimacy. |
| 585 | nation-state | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: nation + state. Study the complete expression as one field-specific unit. | 国民国家 | A nation-state may still contain several languages and cultural groups. |
| 586 | border dispute | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: border + dispute. Study the complete expression as one field-specific unit. | 国境紛争 | The two governments submitted the border dispute to arbitration. |
| 587 | cultural landscape | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: cultural + landscape. Study the complete expression as one field-specific unit. | 文化的景観 | Terraced fields form a cultural landscape created over generations. |
| 588 | push factor | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: push + factor. Study the complete expression as one field-specific unit. | プッシュ要因 | Armed conflict is a powerful push factor in migration. |
| 589 | pull factor | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: pull + factor. Study the complete expression as one field-specific unit. | プルファクター | Available jobs can be a pull factor for migration. |
| 590 | demographic transition | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: demographic + transition. Study the complete expression as one field-specific unit. | 人口動態の変遷 | During demographic transition, death rates often fall before birth rates. |
| 591 | human-environment interaction | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: human + environment + interaction. Study the complete expression as one field-specific unit. | 人間と環境の相互作用 | Irrigation is a human-environment interaction that can support farming and increase soil salinity. |
| 592 | population pyramid | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: population + pyramid. Study the complete expression as one field-specific unit. | 人口ピラミッド | A wide base on a population pyramid indicates many young people. |
| 593 | dependency ratio | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: dependency + ratio. Study the complete expression as one field-specific unit. | 依存率 | An aging population can raise the dependency ratio. |
| 594 | urban sprawl | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Term structure: urban + sprawl. Study the complete expression as one field-specific unit. | 都市のスプロール化 | Urban sprawl can increase car travel and habitat loss. |
| 595 | megacity | noun StudyField: Grade 9 world-history, civics, and geography term Word study: Suffix focus: -ity commonly forms a noun naming a quality, state, or condition. | 巨大都市 | A megacity requires extensive transportation and water systems. |
Vocabulary reading and practice
Page 17 vocabulary review
Vocabulary list page; expanded practice is coming later.
English reading
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Japanese translation
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Vocabulary quiz
Choose the dictionary equivalent for each of 5 selected words.
Vocabulary chart page
This page focuses on the word chart. Reading passages appear once in each three-page group, while cloze quizzes remain in the established enhanced range for this level.
Sources and curriculum references
These references guide selection and calibration. Definitions, sample sentences, readings, questions, and teaching notes are independently written and reviewed.
- GreatSchools: 9th Grade Vocabulary Words
- Victoria University of Wellington: Coxhead Academic Word List
- Common Core: Language Standards for Grades 9–10
- Common Core: Science and Technical Subjects, Grades 9–10
- WikDict downloadable bilingual dictionaries
- Kaikki.org / Wiktextract machine-readable Wiktionary data
- Language-Learning-decks public flashcard datasets
- SBBIC English-to-Khmer Dictionary
- English–Khmer Dictionary Dataset (machine-generated Khmer fallback; human review required)
- PanLex meanings snapshot (direct CC0 gap candidates; human review required)
- Cambridge bilingual dictionaries (individual editorial sense checks)
- Collins English–Hindi Dictionary (individual editorial checks)
- Hindwi and Rekhta dictionaries (individual Hindi/Urdu checks)
- National Institute of Korean Language: Basic Korean Dictionary
- JMdict/EDRDG Japanese dictionary project
- CC-CEDICT Chinese dictionary project
- VDict Vietnamese Dictionary (individual editorial check)
- Google Translate (machine-assisted lesson-reading draft; fluent review required)
- Kuperman et al.: Age-of-acquisition ratings for 30,000 English words
- The Princeton Review, Word Smart (2006 and 2012 editions; bibliographic calibration only).