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IELTS Speaking · Vocabulary · Topic

Environment vocabulary for IELTS Speaking

Last updated 21 July 2026

In short

Climate, sustainability, and conservation vocabulary that examiners love. This collection gathers 20 high-value words for the environment topic, each with a clear definition, example sentences and the collocations that make it sound natural in the IELTS Speaking test.

Word list

All 20 words in this collection, with meanings and example sentences.

conservation
The protection and careful management of the natural environment and resources.
“Wildlife conservation depends on funding and awareness.”
eco-friendly
Not harmful to the environment.
“The company uses eco-friendly packaging.”
renewable
(Of energy or resources) able to be replenished naturally and not used up.
“Solar and wind are renewable sources of energy.”
sustainable
Able to continue over time without depleting natural resources or harming the environment.
“We need a more sustainable approach to farming.”
breathtaking
Astonishingly beautiful or impressive.
“The view from the summit was breathtaking.”
carbon footprint
The total amount of greenhouse gases produced by a person, activity, or organisation.
“Flying less is one way to reduce your carbon footprint.”
deforestation
The clearing or removal of forests, usually for farming or development.
“Deforestation threatens countless species.”
emissions
Gases or substances released into the atmosphere, especially those that cause pollution.
“Governments have pledged to cut carbon emissions.”
biodiversity
The variety of plant and animal life in a particular habitat or on Earth.
“Rainforests are rich in biodiversity.”
degradation
The process by which the quality of the environment is damaged or reduced.
“Overfarming leads to soil degradation.”
depletion
The reduction of something, especially a natural resource, by using it up.
“The depletion of fish stocks worries scientists.”
detrimental
Tending to cause harm or damage.
“Plastic waste is detrimental to marine life.”
finite
Limited in size or amount; having an end.
“Fossil fuels are a finite resource.”
offset
To counteract or balance out something with an opposing force or action.
“Airlines let passengers offset their carbon emissions.”
picturesque
Visually attractive, especially in a quaint or charming way.
“We stayed in a picturesque fishing village.”
tipping point
The critical point at which a change becomes unstoppable or irreversible.
“Scientists warn the climate may be nearing a tipping point.”
urbanisation
The increasing movement of people from rural areas into towns and cities.
“Rapid urbanisation has strained public services.”
viable
Capable of working successfully; feasible.
“The business is no longer commercially viable.”
mitigate
To make something bad less severe or harmful.
“Planting trees can help mitigate climate change.”
pristine
In its original, unspoilt condition; spotlessly clean.
“The reserve protects a stretch of pristine coastline.”

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Frequently asked questions

How can I remember environment vocabulary for IELTS?
Use spaced repetition and active recall rather than rote lists: review each word with flashcards and quizzes at growing intervals, and practise saying it aloud in your own example sentences.
Do I need less common words to score Band 7+ in IELTS Speaking?
Yes. The Lexical Resource criterion rewards less common and idiomatic vocabulary used accurately, along with natural collocations and effective paraphrasing — not just a wide list of words.
How many words are in this collection?
This collection has 20 hand-picked words, each with a definition, pronunciation, example sentences, synonyms and collocations.

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