10 Essential IELTS Vocabulary Words for Describing Graphs
One of the biggest challenges in IELTS Academic Writing Task 1 is describing graphs accurately and using a variety of vocabulary. Instead of repeating words like go up or go down, use more academic alternatives. This will help improve your Lexical Resource, one of the four IELTS Writing scoring criteria.
Here are 10 essential vocabulary words and phrases every IELTS student should master.
1. Increase
Meaning: To become larger or higher.
Example:
The number of tourists increased from 2 million to 4 million between 2015 and 2020.
Other words:
Rise
Grow
Climb
2. Decrease
Meaning: To become smaller or lower.
Example:
The unemployment rate decreased steadily over the five-year period.
Other words:
Decline
Fall
Drop
3. Peak
Meaning: To reach the highest point.
Example:
Sales peaked at 80,000 units in December.
Common collocations:
reach a peak
peak at
hit a peak
4. Fluctuate
Meaning: To rise and fall repeatedly.
Example:
Oil prices fluctuated throughout the year.
Common collocations:
fluctuate slightly
fluctuate considerably
fluctuate over time
5. Remain Stable
Meaning: To stay at the same level.
Example:
The percentage remained stable at around 25%.
Other expressions:
remain unchanged
stay constant
level off
6. Sharp
Meaning: A large or sudden change.
Example:
There was a sharp increase in online shopping.
Common collocations:
sharp rise
sharp decline
sharp drop
7. Gradual
Meaning: Happening slowly over time.
Example:
The graph shows a gradual decline in population growth.
Other expressions:
steady increase
gradual rise
gradual decrease
8. Significant
Meaning: Large enough to be important or noticeable.
Example:
A significant improvement was observed after 2020.
Other words:
considerable
substantial
dramatic
9. Account for
Meaning: To make up or represent a proportion.
Example:
Women accounted for 60% of the total workforce.
Useful for:
Pie charts
Tables
Bar charts
10. Respectively
Meaning: In the same order as previously mentioned.
Example:
Japan and China produced 40% and 35% of the total exports, respectively.
Why it's useful:
This word helps you compare multiple figures clearly and naturally.
Bonus Vocabulary
Instead of repeating the same verbs, use these alternatives:
| Increase | Decrease |
|---|---|
| rise | fall |
| grow | decline |
| climb | drop |
| surge | plunge |
| soar | dip |
| jump | reduce |
Adverbs
Use adverbs to describe the degree of change:
dramatically
significantly
considerably
steadily
gradually
slightly
marginally
rapidly
Example:
The number of visitors increased dramatically between 2018 and 2020.
IELTS Writing Task 1 Tip
When describing a graph:
Write an overview first.
Compare the highest and lowest figures.
Group similar trends together.
Use a variety of verbs, adjectives, and adverbs.
Avoid giving personal opinions.
Using a wide range of vocabulary naturally can help you achieve a higher Lexical Resource score in IELTS Academic Writing Task 1.
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