To score a **Band 8 or higher** in the IELTS speaking test, you need to master the *Lexical Resource* grading criterion. The IELTS rubric specifically states that a Band 8 candidate "uses a wide vocabulary resource readily and flexibly," and "uses less common and idiomatic vocabulary with some awareness of style and collocation." In this guide, we provide a curated checklist of natural idioms, high-scoring collocations, and advanced discourse connectors to secure your Band 8+.
Evaluating Lexical Resource: Band 7 vs Band 8
The difference between a Band 7 and a Band 8 speaking score lies in the **naturalness** and **flexibility** of your vocabulary. Using extremely academic or outdated idioms actually lowers your score. You must use idiomatic language naturally as a native speaker would, avoiding forced or robotic terms:
| Category | Overused / Outdated (Band 6-7) | Natural & High-Scoring (Band 8+) |
|---|---|---|
| Idiomatic Weather | "It is raining cats and dogs." | "It's absolutely pouring down out there." |
| Expressing Happiness | "I was over the moon." | "I was absolutely thrilled to bits." / "I was on cloud nine." |
| Uncommon Collocation | "This is a big problem." | "This poses a significant challenge." / "A pressing issue." |
| Expressing Likeness | "I like reading very much." | "I have a real soft spot for literature." / "An avid reader." |
1. Topic-Specific Collocations
Collocations are word combinations that naturally go together. Examiners actively listen for these pairs in Part 2 and Part 3. Memorize these key collocations grouped by common IELTS topics:
IELTS Speaking Topic Formulas
- Environment: "to mitigate climate change," "irreversible damage," "sustainable development"
- Technology: "cutting-edge technology," "technological breakthrough," "to be glued to a screen"
- Education: "rote learning," "hands-on experience," "to acquire practical skills"
- Work & Career: "heavy workload," "career advancement," "a healthy work-life balance"
2. High-Scoring Discourse Connectors
Discourse connectors show organization. Instead of using repetitive conjunctions (like *and*, *but*, *so*, *because*), use advanced structures to connect your sentences smoothly. This boosts your score in both Lexical Resource and Fluency & Coherence:
"Replace 'but' with: **Nonetheless / Having said that**. Replace 'because' with: **Due to the fact that / In light of**. Replace 'so' with: **As a direct consequence of this / Consequently**."
Before you go...
Securing a Band 8+ in IELTS Speaking is not about memorizing complex dictionaries. It is about using natural, idiomatic collocations flexibly and organizing your thoughts using advanced connectors. Practice recording your speech, check off items on this checklist, and refine your delivery to ensure your spoken English feels natural.