IELTS Writing Task 1 Vocabulary: A Complete Reference
Lexical Resource accounts for 25% of your IELTS Writing Task 1 score. The Band 7 descriptor requires “sufficient range of vocabulary to allow some flexibility and precision,” while Band 8 requires “wide resource, used fluently and flexibly to convey precise meanings.” For Task 1, this translates to three practical requirements: using varied trend verbs with degree modifiers, using precise comparison phrases, and deploying hedging language when approximate values are read from a visual.
This reference covers every major vocabulary area tested in Task 1, organised by function. It is designed to be studied systematically, not skimmed. For each vocabulary group, note not only the words but the typical grammatical structures they appear in, since the Band 8 descriptor rewards fluency — knowing a word but using it ungrammatically does not score Lexical Resource points. For practical application of this vocabulary, the bar chart guide and band score breakdown show how these language choices translate directly into mark criteria.
Trend Vocabulary with Degree Modifiers
Trend verbs are the most heavily used vocabulary in line graph and bar chart descriptions. Precision requires both the correct verb (to indicate direction) and the correct degree modifier (to indicate speed and magnitude). The two elements work together: “rose” without a modifier is vague; “rose dramatically” is precise.
Verbs for upward movement
| Verb | Connotation | Typical Degree |
|---|---|---|
| rose / increased | Neutral upward movement | Any degree modifier |
| climbed / grew | Steady, sustained upward movement | Moderately, steadily, gradually |
| surged / soared | Rapid, dramatic upward movement | Dramatically, sharply, steeply |
| jumped / rocketed | Sudden, unexpected upward movement | Dramatically, sharply |
| recovered / rebounded | Upward movement after a prior decline | Strongly, gradually, slowly |
| edged upward | Very slight upward movement | Slightly, marginally |
Verbs for downward movement
| Verb | Connotation | Typical Degree |
|---|---|---|
| fell / decreased / declined | Neutral downward movement | Any degree modifier |
| dropped / dipped | Relatively quick or temporary downward movement | Sharply, slightly, briefly |
| plummeted / plunged / slumped | Very rapid, large downward movement | Dramatically, sharply, steeply |
| contracted / narrowed | Gradual shrinkage of a gap or value | Gradually, steadily |
| edged downward | Very slight downward movement | Slightly, marginally |
Verbs for stability and irregular movement
- remained stable / held steady / stayed constant — no meaningful change
- levelled off / plateaued — movement stopped after a period of change
- fluctuated / varied / oscillated — irregular movement, neither consistently up nor down
- stagnated — absence of expected or desired growth (negative connotation)
Degree modifier scale
| Degree | Adverb | Adjective (noun phrase) |
|---|---|---|
| Extreme | dramatically, dramatically, steeply, markedly | a dramatic / steep / marked rise |
| High | significantly, substantially, considerably, notably | a significant / substantial / considerable fall |
| Moderate | moderately, steadily, gradually | a moderate / steady / gradual increase |
| Low | slightly, marginally, gently, modestly | a slight / marginal / modest decline |
Both forms (adverb and adjective) are correct, but mixing them produces variety. “The figure rose dramatically” (adverb) and “there was a dramatic rise in the figure” (adjective in noun phrase) convey identical meaning with different grammatical structure — exactly the kind of range rewarded by the Grammatical Range and Accuracy descriptor. The same vocabulary range that improves your Writing score directly benefits your IELTS Speaking vocabulary, since Part 3 discussions frequently involve describing trends in society, technology, or the environment.
Comparison Phrases
Comparison language is tested across all Task 1 visual types, but it is especially important for tables, pie charts, and grouped bar charts where multiple values must be related to each other. A strong vocabulary command also supports Task 2 writing — the Writing Task 2 vocabulary guide covers the argumentative and cohesive language that complements the descriptive vocabulary here.
Expressing superiority
- “[A] was higher than [B]” / “[A] exceeded [B]”
- “[A] was approximately twice as high as [B]”
- “[A] outpaced / outstripped [B] by [X] percentage points”
- “[A] recorded a significantly higher figure than [B], at [X] compared to [Y]”
Expressing similarity or equality
- “[A] and [B] recorded broadly similar figures”
- “[A] was roughly equal to [B]” / “[A] matched [B] closely”
- “Both [A] and [B] showed comparable levels of [X]”
- “[A] and [B] were virtually identical at [X] and [Y] respectively”
Expressing contrast
- Coordinating: “[A] rose sharply, while / whereas [B] declined”
- Adverbial: “By contrast / In contrast, [B] showed a very different pattern”
- Prepositional: “In comparison with [A], [B] recorded significantly lower figures”
- On the other hand: Acceptable, but less precise than the above options
Expressing the gap between values
- “The gap between [A] and [B] widened / narrowed over the period.”
- “By [Year], the difference between [A] and [B] had grown to [X] percentage points.”
- “The two figures converged, both reaching approximately [X] by [Year].”
- “The disparity between [A] and [B] was most pronounced in [Year].”
Approximate Language
Reading values from a visual (bar chart, line graph, pie chart) rarely produces exact figures. When a value falls between gridlines or is otherwise uncertain, using approximation language is not only acceptable — it is required. Stating “exactly 47%” when a bar clearly falls between the 40% and 50% gridlines is a Task Achievement error. Using approximate language signals to the examiner that you understand the nature of visual data.
Approximation vocabulary
- Just over / just under: “just over 30%” means slightly above 30%
- Approximately / around / roughly: interchangeable; use all three for variety
- Nearly / almost: approaching a round number from below (“nearly 50%” = perhaps 48–49%)
- About: acceptable but slightly informal; prefer “approximately” in formal writing
- A little more than / a little less than: more precise than “approximately” when close to a known value
- In the region of: formal variant of “approximately,” best for larger numbers
Overview Phrases
The overview is the paragraph that most directly determines whether a response achieves Band 7 or above for Task Achievement. The opening phrase signals to the examiner that a dedicated overview is beginning. Using the same phrase every time (“Overall, it can be seen that…”) is a Lexical Resource limitation.
Overview opening phrases
- “Overall, the most striking feature of the [chart / graph / table] is…”
- “In general, the data reveals that…”
- “At a glance, the most significant observation is…”
- “Taking an overview of the data, it is clear that…”
- “Overall, [the dominant trend / the most notable pattern] is…”
Phrases for noting the most significant feature
- “Most notably, [Category A] recorded the highest [value / proportion / rate] throughout.”
- “The most dramatic change occurred in [Category / Country], which [rose / fell] from [X] to [Y].”
- “Of particular interest is the [rise / decline / stability] of [Category].”
- “The single most striking observation is the [convergence / divergence] of [A] and [B].”
Proportion and Share Language for Pie Charts and Tables
- Majority: more than half / over 50% / the majority / the dominant share
- Large minority: a substantial / significant / considerable proportion
- Small share: a small fraction / a minor share / a modest proportion
- Combining shares: “Together, [A] and [B] accounted for nearly two-thirds of the total.”
- Dominant category: “[A] was the single largest category, representing [X]% of the total.”
Vocabulary Errors That Cost Marks
Using “increase” as an adjective
“There was an increase people” is ungrammatical. Increase is a noun (“there was an increase inthe number of people”) or a verb (“the number of people increased”). It cannot function as an adjective.
Confusing “amount” and “number”
“Amount” is used with uncountable nouns (“the amount of water,” “the amount of energy”). “Number” is used with countable nouns (“the number of visitors,” “the number of factories”). Using “the amount of people” is a Lexical Resource error that appears in a significant minority of Band 5–6 responses.
Repeating the same verb throughout
Using “increased” ten times in a response is a clear Lexical Resource limitation. The degree modifier table above provides at least five verbs for upward movement and five for downward movement. Use at least three different trend verbs per response.
Using informal language
Words like “a lot,” “big,” “huge,” and “went up” are informal and reduce the formality register that Task 1 requires. Replace with “considerably,” “substantial,” “dramatic,” and “rose” respectively.