Academic Task 1
IELTS Task 1 vocabulary for describing data
Academic Task 1 asks you to report at least 150 words about a chart, graph, table or diagram. The fastest way to lift your Lexical Resource band is a small, accurate vocabulary bank for trends, degree and approximation that you can rotate instead of repeating the same word.
In short
- Build three banks: trend verbs (surge, decline, level off), degree adverbs (sharply, gradually) and approximation phrases.
- Vary your wording across the report; repeating increased five times caps your Lexical Resource score.
- Accuracy beats rarity. Use common academic words you can spell and place correctly in a sentence.
Trend verbs and nouns
Most Academic Task 1 charts move in one of four ways: up, down, stable, or fluctuating. For each direction, keep three or four words ready in both verb and noun form. Using the noun lets you front the sentence differently, which examiners read as a wider range.
- Upward: rose, grew, climbed, surged, soared. Noun forms: a rise, a growth, an upward trend. Example: Sales rose by 20 percent or There was a rise of 20 percent in sales.
- Downward: fell, declined, dropped, plunged, dipped. Noun forms: a fall, a decline, a drop. Example: Unemployment declined steadily.
- No change: levelled off, stabilised, remained steady, plateaued, held constant.
- Up and down: fluctuated, varied, oscillated. Peaks and troughs: peaked at, reached a high of, bottomed out at.
Degree adverbs and approximation
A trend verb tells the reader the direction; a degree adverb tells them how much. Pairing the two is where bands are won. Add approximation language so you can report figures accurately without copying every exact number, which sounds mechanical and wastes words.
Degree (how much): sharply, dramatically, steeply for big moves; gradually, steadily, slowly for slow moves; slightly, marginally, modestly for small moves. Place the adverb after the verb: prices fell sharply, or use an adjective with the noun: a sharp fall in prices.
Approximation: approximately, around, roughly, just over, just under, nearly, almost, well over. Example: The figure stood at just over 60 percent reads more naturally than The figure was 61 percent.
Proportion nouns: for pie charts and tables, use a quarter, a third, a fifth, the majority, a minority, a significant proportion. These let you describe shares without repeating percent on every line.
Band 6 wording vs band 7 wording
| Repetitive (band 6 feel) | Varied (band 7 feel) |
|---|---|
| Sales increased. Then sales increased again. | Sales rose, then climbed further the following year. |
| It went up a lot. | It surged sharply, peaking at 80 percent. |
| Numbers went down a little. | The figures dipped slightly, falling by roughly 5 percent. |
| The amount stayed the same. | The total levelled off and remained steady thereafter. |
| It was 49 percent. It was about half. | Just under half of respondents, around 49 percent, agreed. |
Variation, not rare words
Lexical Resource is one of the four equally weighted criteria, alongside Task Achievement, Coherence & Cohesion and Grammatical Range & Accuracy. It rewards range and accuracy, not obscurity. The most common Task 1 vocabulary mistake is using one word, usually increased, on repeat. The second is reaching for a rare word and misusing it, which costs more than it earns.
A practical method: before you write, group the data into the four trend directions. Assign a different verb to each occurrence so no word appears twice in a paragraph. Then check that every degree adverb actually matches the size of the change in the chart. A move from 10 to 11 percent is slight, not dramatic; mismatching them is a precision error examiners notice.
When you submit work to our IELTS writing correction service, a qualified human teacher marks your actual word choices against all four criteria and shows you exactly where repetition or inaccuracy held your Lexical Resource band down, with the precise replacements to use next time.
IELTS Task 1 vocabulary FAQs
What vocabulary do I need for IELTS Task 1?+
You need three groups: trend verbs (rose, declined, levelled off), degree adverbs that show how much (sharply, gradually, slightly), and approximation phrases (approximately, just over, roughly). Together these let you report figures precisely without repeating the same words.
Which criterion does Task 1 vocabulary affect?+
It mainly affects Lexical Resource, one of the four equally weighted criteria. Examiners reward a range of accurate words used naturally. Repeating increased five times or misusing a word both lower the band, so variety plus accuracy matters more than rare vocabulary.
How do I avoid repeating the word increase?+
Build a small bank of alternatives and rotate them: rose, grew, climbed, went up, surged. Vary the form too, using the noun (a rise of) and the verb (rose by). Two or three accurate synonyms used correctly beat one word repeated.
Should I use very advanced vocabulary in Task 1?+
No. Accuracy outranks rarity. A simple word used correctly scores better than a rare word used wrongly. Aim for precise, common academic vocabulary such as fluctuate, peak and plateau, and only use a term you fully understand and can spell.
How many synonyms for trends should I memorise?+
Around three to four per trend direction is enough: up, down, no change, and fluctuation. That gives roughly twelve to sixteen flexible words, plenty to describe most charts without repetition while keeping every word accurate and natural in context.