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. | ការចល័ត | 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. | សង្គ្រាមសរុប | 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. | សង្គ្រាមលេណដ្ឋាន | 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. | ការសម្រេចចិត្តដោយខ្លួនឯង។ | 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. | សន្តិសុខរួម | 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. | សង្គមប្រជាជាតិ | 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. | សន្ធិសញ្ញា Versailles | 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. | ណាស៊ីនិយម | 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. | ហាយនភាព; ការបំផ្លាញទាំងស្រុង; ការសម្លាប់រង្គាល | 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. | ថាមពលអ័ក្ស | 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. | សម្ព័ន្ធមិត្ត | 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. | គោលការណ៍នៃការលួងលោម | 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. | សង្គ្រាមត្រជាក់ | 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. | គោលនយោបាយទប់ស្កាត់ | 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. | សង្គ្រាមប្រូកស៊ី | 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. | ការប្រណាំងអាវុធ | 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. | ការទប់ស្កាត់នុយក្លេអ៊ែរ | 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. | 1. ការរំដោះអាណានិគម 2. ដំណើរការបញ្ចប់អាណានិគម | 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. | ចលនាមិនចូលជួរ | 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. | អង្គការសហប្រជាជាតិ | 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. | សេចក្តីថ្លែងការណ៍ជាសកលស្តីពីសិទ្ធិមនុស្ស | 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. | សិទ្ធិមនុស្ស | 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. | 1. អសេនិកសង្គម 2. សង្គមស៊ីវិល | 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. | ភាពស្របច្បាប់នយោបាយ | 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. | ជាតិ-រដ្ឋ | 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. | ជម្លោះព្រំដែន | 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. | ទេសភាពវប្បធម៌ | 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. | កត្តាជំរុញ | 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. | កត្តាទាញ | 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. | ការផ្លាស់ប្តូរប្រជាសាស្រ្ត | 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. | អន្តរកម្មរបស់មនុស្ស – បរិស្ថាន | 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. | ពីរ៉ាមីតប្រជាជន | 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. | សមាមាត្រភាពអាស្រ័យ | 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. | ការរីករាលដាលនៃទីក្រុង | 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. | ភាពអស្ចារ្យ | 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
Reading passage is being prepared.
Khmer translation
A reviewed translation is not available for this passage yet.
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).