/ʌnˈpres.ɪ.dən.tɪd/ · adjective
unprecedented
chưa từng có tiền lệ — Chưa từng xảy ra hoặc tồn tại trước đây — ở mức độ, quy mô hay tốc độ chưa có tiền lệ.
The upgrade in 5 seconds
a very big increase in online shopping
an unprecedented rise in online shopping
No definition. No dictionary. Just the sentence, made better.
Section 02
The Common Mistake
Many IELTS candidates lean on huge, massive and very big.
“Huge” and “massive” are correct — but they only describe size, not novelty. They miss the sense that nothing comparable has happened before.
“Yes — that's exactly how I write, too.”
Section 03
The Better Choice
This is the step from Band 6 to Band 7 — not a harder word, a more precise one.
Section 04
Why It Works
“Huge” just says something is large. “Unprecedented” says it has never happened before — the emphasis is on novelty and scale together, not size alone.
That is why it dominates Task 1 data description and Task 2 crisis essays. It pairs with nouns of scale and change (rise, growth, scale, levels, demand) — the exact collocations Band 8 rewards.
Section 05 · The core of the lesson
Upgrade Matrix
Watch one idea climb from Band 6 to Band 9 — same meaning, rising precision.
There was a very big increase in online shopping during the pandemic.
Correct, but “very big” is vague and repeats the weakest IELTS intensifier.
There was an unprecedented increase in online shopping during the pandemic.
Stronger adjective, though the noun phrase could be tighter.
The pandemic triggered an unprecedented rise in online shopping.
Natural collocation + a concrete cause. This is the target.
The pandemic triggered an unprecedented rise in online shopping, a trend that has persisted long after restrictions were lifted.
Developed idea with a follow-on clause — fully controlled.
The city is facing a very big housing shortage.
Fine, but “very big” understates the seriousness.
The city is facing an unprecedented housing shortage.
“Unprecedented shortage” is a top-tier academic collocation.
The city is facing an unprecedented housing shortage, forcing thousands of residents to relocate.
Precise and consequential — nothing wasted.
Section 06 · Read against the band descriptors
Examiner's Insight
How this word measures up against the public IELTS Writing & Speaking band descriptors — an editorial read, not a real examiner's verdict.
In Writing Task 1 and Task 2, “an unprecedented rise” is the kind of phrasing the band descriptors reward — not because the word is rare, but because it captures scale and novelty together precisely. It signals control of academic register, not just a bigger vocabulary.
Section 07
Native Radar
Not about grammar — about whether a native speaker would actually say it.
-
Native would naturally say
the country experienced unprecedented levels of migration
-
Native might say
unprecedented weather
Understood, but vague — pair it with a specific measurable noun (temperatures, rainfall, storms) rather than the bare word “weather”.
-
Native almost never says
an unprecedented small decrease
Unprecedented signals something remarkable and large-scale — pairing it with “small” contradicts the word's own emphasis.
Section 08 · Under 5 minutes
Active Recall
01 Rewrite using unprecedented: “There was a very big rise in electricity prices last year.”
Model answer
There was an unprecedented rise in electricity prices last year.
02 Choose the stronger collocation: unprecedented small change / unprecedented levels.
Answer
unprecedented levels — precise and academic.
03 Complete naturally: “The region has seen an ______ surge in tourism since the new airport opened.”
Answer
unprecedented — “an unprecedented surge” is a natural pairing.
Unprecedented means never seen before —
not just very big.
If you forget everything else, keep this.
Section 10 · Editorial rating
Examiner Score
Section 11 · The editor closes
Final Verdict
Unprecedented is one of the most versatile intensifiers in academic English. It is not a rare word you show off — it is the precise upgrade for describing scale that has genuinely never been seen before. The moment you write “an unprecedented rise” instead of “a very big rise,” your Task 1 or Task 2 answer signals exactly how extreme the change is, not just that it is large.
Learn it once, pair it with nouns of scale — rise, growth, levels, scale, demand — and it will strengthen almost any essay or chart description involving extreme or record-breaking change.
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