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O-Level English Vocabulary and Language Use (SEAB 1184): precision and word choice, collocations and phrasal verbs, idioms and figurative language, word formation and roots, and register and tone

A module overview of Vocabulary and Language Use for Singapore O-Level English (SEAB 1184): choosing precise and varied words, using natural collocations and phrasal verbs, understanding and using idioms and figurative language, building word forms from roots and affixes, and controlling register and tone, with links to every dot point.

Generated by Claude Opus 4.88 min readSEAB-1184

Reviewed by: AI editorial process; not yet individually human-reviewed

Jump to a section
  1. What Vocabulary and Language Use demands
  2. Precision and word choice
  3. Collocations and phrasal verbs
  4. Idioms and figurative language
  5. Word formation and roots
  6. Register and tone
  7. How Vocabulary and Language Use is examined
  8. Worked example
  9. Check your knowledge

What Vocabulary and Language Use demands

Vocabulary is a thread through every paper under SEAB 1184, not a section of its own. Precise word choice lifts Continuous and Situational Writing; accurate collocations and word forms protect language marks in Editing and writing; and understanding vocabulary in context, idioms and figurative language is tested directly in Comprehension. Building strong, accurate, well-judged vocabulary is therefore one of the highest-value things you can do, because it pays off in reading, writing and speaking at once. This module covers the five skills that make up that strength.

This guide ties together the five dot points in this module, each with its own worked answers and practice. See the subject hub at /sg-o-level/english-language and the full syllabus at /sg-o-level/english-language/syllabus.

Precision and word choice

Precision and word choice means replacing vague words like "nice" and "thing" with exact ones, avoiding repetition, and using strong words correctly rather than to impress. The aim is the right word, not the biggest word: a precise verb or noun carries meaning vivid and clear writing depends on, and a misused "impressive" word costs more than a plain accurate one.

Collocations and phrasal verbs

Collocations and phrasal verbs are fixed word partnerships ("make a decision", "heavy rain", "give up", "look after") that fluent readers expect. Because the pairings are set by convention rather than logic, a wrong partner sounds off even when it is grammatical, so these are best learnt as units rather than reasoned out word by word.

Idioms and figurative language

Idioms and figurative language cover non-literal meaning. An idiom means something its individual words do not ("raining cats and dogs"), read from context and learnt; figurative language (simile, metaphor, personification) describes one thing in terms of another for effect. Use figures of speech for effect but with restraint, since overuse weakens rather than strengthens writing.

Word formation and roots

Word formation and roots lets you decode unfamiliar words and build the right form. A prefix changes meaning ("un-"), a root carries the core sense (Latin "port" means carry), and a suffix changes the grammatical form ("-ness" makes a noun). Knowing common prefixes, suffixes and Greek and Latin roots helps in Comprehension and in choosing the correct word form when writing.

Register and tone

Register and tone are controlled by vocabulary: formal words raise the register, everyday words lower it, and word choice colours the attitude ("cheap" versus "affordable"). Match both to the purpose and audience and keep them consistent, since a shift in register or an out-of-place word undermines a piece, just as it does in Situational Writing.

How Vocabulary and Language Use is examined

  • Choose the exact word. Prefer the precise, correct word over the vague or the merely impressive, and avoid repetition.
  • Use natural partnerships and forms. Learn collocations, phrasal verbs and word forms as units so your English reads as fluent and accurate.
  • Judge register, tone and figures. Match register and tone to purpose and audience, and use idioms and figurative language correctly and with restraint.

Worked example

A short model showing how to lift a vague sentence through precise, well-judged vocabulary, the habit at the centre of this module.

Check your knowledge

A mix of recall and technique questions covering the module. Attempt them, then check against the solutions.

  1. Explain why the right word beats the biggest word in writing. (2 marks)
  2. Give the correct collocation: you ___ a decision (make / do). (1 mark)
  3. Explain what an idiom is, with one example and its meaning. (2 marks)
  4. Identify the figurative technique: "The wind whispered through the trees." (1 mark)
  5. Using roots and affixes, explain how "un-", "port" and "-able" build meaning. (3 marks)
  6. Explain how vocabulary controls register, with an example pair. (2 marks)

Sources & how we know this

  • english-language
  • sg-o-level
  • seab-1184
  • vocabulary-and-language-use
  • vocabulary
  • collocations
  • figurative-language
  • register
  • 2026