Primary 6 Vocabulary 2019: Word Families, Morphology and Grammar Practice
This page preserves a historical Raffles Girls Primary 6 SA2 2019 word bank but gives it a distinct learning job: teach how words change form and how those changes affect grammar and meaning.
This is an eduKate learning resource, not an official prescribed MOE or SEAB vocabulary list.
The Historical 32-Word Bank
quiver, plains, antelope, crept, might, laced, potent, substance, bout, midday, startled, achievement, behaviour, modesty, heaved, indifferently, insult, subjected, treatment, forefathers, heritage, superiority, tolerated, tradition, equality, distributed, fairly, selfishness, intolerable, trait, frowned, machete.
Word Families
| Base | Related forms | Learning point |
|---|---|---|
| achieve | achievement, achievable | verb → noun/adjective |
| behave | behaviour, behavioural | verb → noun/adjective |
| modest | modesty, modestly | adjective → noun/adverb |
| superior | superiority | adjective → noun |
| equal | equality, equally | adjective → noun/adverb |
| selfish | selfishness, selfishly | adjective → noun/adverb |
| tolerate | tolerated, tolerable, intolerable, tolerance | verb → adjective/noun; prefix changes meaning |
| distribute | distributed, distribution, distributive | verb → noun/adjective |
| indifferent | indifference, indifferently | adjective → noun/adverb |
| treat | treated, treatment | verb → noun |
Prefixes and Meaning
intolerable contains the negative prefix in-. Compare:
- tolerable — able to be endured;
- intolerable — not reasonably able to be endured.
Do not assume every prefix has exactly one meaning in every word. Morphology helps, but context still matters.
Suffixes and Word Class
- -ment: achievement, treatment
- -ity: superiority, equality
- -ness: selfishness
- -ly: indifferently, fairly
Suffixes can signal likely grammatical roles, which helps in editing and cloze work.
Singapore/British Spelling Note
behaviour is standard Singapore/British spelling. The historical list used the US spelling behavior. Learners should recognise both while keeping their own writing internally consistent.
Sentence Repair
- Her greatest achieve was completing the project.
- He replied indifference when asked about the result.
- The rules were applied with complete equal.
- The situation became tolerance after several hours.
- The teacher distribution the worksheets among the class.
Corrections: achievement; indifferently; equality; intolerable; distributed.
Choose the Correct Form
- The pupils behaved well. Their ______ was praised. (behaviour / behavioural)
- The solution was not perfect, but it was ______. (tolerable / tolerance)
- The prize was ______ among the teams. (distributed / distribution)
- She answered ______. (indifferent / indifferently)
- The two groups were treated with ______. (equal / equality)
Answers: behaviour; tolerable; distributed; indifferently; equality.
Retrieval by Family
Cover the table and generate at least two related forms for each base word. Then write one sentence showing that the grammatical role has changed correctly.
RFE
Help learners see vocabulary as a system of related forms so they can decode unfamiliar words and generate the correct form when grammar demands it.
For the complete 32-word passage glossary, see Raffles Girls SA2 2019 Vocabulary Guide. For the wider collection, use the eduKate Vocabulary Lists hub.
Historical Raffles Girls Primary Source Media




