Your premier destination for standardized test preparation

people sitting in a library

5th-grade-vocabulary-words

English Vocabulary · Grade 5 Live Review Preview

5th Grade Vocabulary Words

Fifth-grade readers use increasingly precise vocabulary to compare sources, explain evidence, interpret literature, and learn independently across science, mathematics, and social studies. The curriculum emphasizes context clues, meaningful word parts, parts of speech, and language that strengthens both discussion and writing.

This independently authored 500-word beta curriculum is arranged in twenty pages of twenty-five words each. Words 1–300 include five cloze questions per page; words 301–500 remain fully visible and editable as list pages while the expanded practice layer is developed. References calibrated level and coverage only; all learner-facing definitions and sample sentences are original KSSR copy.

Open the basic text version — works without JavaScript and is suitable for printing.

Your private study tools

Track your learning with My Vocabulary

Use the three small controls beside any word. Your choices stay attached to your account and appear in your My Vocabulary record.

  • Star a difficult word to practise it again.
  • Check a word when you have learned it.
  • Add a note with a memory clue, synonym, or reminder.

These controls work during your free visits and save privately on this browser. Sign in to move them into your account’s My Vocabulary record.

Printable study sheet

Create a PDF worksheet

Choose any start-to-end page range and meaning language, then include or omit each practice section.

Include practice sections
500 words
Words 301–325 of 500
#WordPattern / part of speechMeaningSample sentence
301pessimisticadjectiveGrade 5 social-emotional wordទុទិដ្ឋិនិយមThe pessimistic sailor doubted that the wind would improve.
302reluctantadjectiveGrade 5 social-emotional word1. រអាដៃ 2. អល់អែកThe reluctant puppy stopped at the edge of the water.
303sincereadjectiveGrade 5 social-emotional word1. ស្មោះ 2. សច្ចំHer sincere apology helped repair the friendship.
304adaptationnounGrade 5 science word1. ធម្មជាតិវិទ្យា) បន្ស៊ាំ (ការធ្វើអោយស៊ាំ 2. ការផ្ស៊ាំ 3. ការតំរូវA camel's ability to conserve water is an adaptation to desert life.
305organismnounGrade 5 science wordភាវរស់Every organism in the pond depends on water.
306habitatnounGrade 5 science wordទីជម្រកThe marsh provides a habitat for frogs and herons.
307ecosystemnounGrade 5 science word1. អាស្រយប្រព័ន្ធ 2. បរិស្ថានប្រព័ន្ធRemoving one species can affect the entire ecosystem.
308speciesnounGrade 5 science wordប្រភេទThe island supports a rare species of lizard.
309communitynounGrade 5 science word1. សហគមន៍ 2. ជុំជន (សៀមThe reef community includes coral, fish, and algae.
310consumernounGrade 5 science wordអ្នកប្រើប្រាស់A rabbit is a consumer that feeds on plants.
311decomposernounGrade 5 science wordអ្នកបំបែកA mushroom acts as a decomposer on the forest floor.
312producernounGrade 5 science wordផលិតករGrass is a producer that uses sunlight to make food.
313nutrientnounGrade 5 science wordសារធាតុចិញ្ចឹមIron is a nutrient that helps blood carry oxygen.
314photosynthesisnounGrade 5 science wordរស្មីសំយោគDuring photosynthesis, leaves release oxygen.
315respirationnounGrade 5 science wordការដកដង្ហើមCellular respiration provides energy for growth and movement.
316germinationnounGrade 5 science wordដំណុះWarm soil and water encourage germination.
317pollinationnounGrade 5 science wordលំអងBees help with pollination as they visit flowers.
318reproductionnounGrade 5 science wordការបន្តពូជFlowering plants use seeds for reproduction.
319inheritedadjectiveGrade 5 science wordទទួលមរតកEye color is an inherited trait.
320instinctnounGrade 5 science wordសភាវគតិMigration is an instinct in many bird species.
321behaviornounGrade 5 science word1. ចរិយា 2. កិរិយា 3. ចរិតThe scientist recorded the penguin's feeding behavior.
322cellnounGrade 5 science word1. កោសិកា 2. ក្រឡាA microscope can reveal the structure of a plant cell.
323tissuenounGrade 5 science wordជាលិកាMuscle tissue contracts to move the body.
324organnounGrade 5 science word1. សរីរាង្គ 2. អង្គThe heart is an organ that pumps blood.
325systemnounGrade 5 science wordប្រព័ន្ធThe digestive system breaks food into usable nutrients.

Vocabulary reading and practice

A Reluctant Scientist

Reading practice for pages 13–15. Five relevant words are highlighted.

English reading

Mina is reluctant to present her beetle model because she feels pessimistic about it. Her partner gives sincere encouragement. Together they explain how each adaptation helps the organism survive in a dry habitat.

Khmer translation

A reviewed translation is not available for this passage yet.

Reading comprehension

1. Why is Mina reluctant to present?

Mina doubts the quality of her model.

2. What does her partner offer?

Her partner offers sincere encouragement.

3. What do the adaptations help the organism do?

They help the organism survive.

Sources and curriculum references

These references guide selection and calibration. Definitions, sample sentences, readings, questions, and teaching notes are independently written and reviewed.