Environmental vocabulary in English

Learn environmental vocabulary in English: nature, pollution, phrasal verbs and idioms.

Updated on 08/09/26

The environment is one of the most important — and most recurring — topics of our time. It appears in the news, in everyday conversations, at work and, of course, in English exams such as the Cambridge ones. Mastering environmental vocabulary in English will not only help you handle yourself better in these situations, but it will also allow you to express yourself with precision and confidence. In this article, you will find vocabulary organised by categories, advanced expressions, collocations, idioms, phrasal verbs and specific advice for Cambridge exams. Let’s get started!

Basic vocabulary about the environment

Let’s start with the foundations. Before moving on to more complex expressions, it is essential that you have a solid grasp of the key words related to the natural world. We have divided them into three blocks to make them easier to study.

Nature and ecosystems

Climate and weather phenomena

Geography and natural features

Environmental problems in English

This is the section that appears most often in Cambridge exams and in current debates. It is essential that you know this vocabulary well, not only to recognise it, but also to use it actively in Speaking and Writing.

Climate change and global warming

Pollution

Deforestation and loss of biodiversity

Natural disasters

Polluting elements

In this section, we focus on the agents that cause environmental damage: fuels, waste and toxic substances. This vocabulary is especially useful for argumentative Writing tasks.

Fossil fuels and emissions

Waste and dumping

Toxic substances

Solutions and eco-friendly actions

It is not all bad news. This vocabulary is essential for talking about solutions, something that Cambridge examiners value enormously. Knowing how to argue in favour of specific actions will give you a great advantage in both Speaking and Writing.

The three Rs: reduce, reuse, recycle

Renewable energy

Conservation and protection

Useful expressions and phrases about the environment

Vocabulary lists are a good starting point, but to reach a B2, C1 or C2 level in Cambridge exams, you need to go one step further. Mastering collocations, idioms and phrasal verbs will allow you to express yourself in a natural and sophisticated way, which is something examiners value enormously.

Important collocations

A collocation is a combination of words that native speakers use naturally and regularly. Learning these combinations will help you sound much more authentic. Here are the most important ones related to the environment:

Idioms about the environment

Idioms are fixed expressions whose meaning cannot be understood literally. Using them in your Speaking or Writing is a clear sign of an advanced level. Here is a selection of the most useful ones related to the environment:

Phrasal verbs about the environment

Phrasal verbs are one of the most characteristic aspects of English and one of the most highly valued in Cambridge exams. Mastering these will allow you to speak and write about the environment in truly natural English:

How to talk about the environment in Cambridge exams

The environment is one of the most frequent topics in Cambridge exams, from B2 First to C2 Proficiency. Preparing it well can make an enormous difference to your mark. Below, I will give you specific advice for Speaking and Writing.

Typical questions in Speaking

In the speaking part of Cambridge exams, questions about the environment are very common, both in the discussion format (Part 3 of B2 First or C1 Advanced) and in direct questions (Part 4). Here is a selection of the most frequent ones so that you can prepare your answers:

💡 Tip: In Speaking, it is not enough to give a short answer. Always justify your opinion, give specific examples and use the vocabulary from this article naturally. Expressions such as «I strongly believe that…», «It seems to me that…» or «On the one hand… on the other hand…» will help you structure your answers.

Advanced vocabulary for Writing

In Cambridge Writing tasks — especially essays and reports — environmental vocabulary tends to appear frequently. Here are more advanced terms and expressions, typical of a C1-C2 level, that will make a difference in your writing:

Tips for learning and practising this vocabulary

Having the vocabulary in front of you is all very well, but what really matters is that you internalise it and can use it spontaneously. Here are my favourite recommendations for achieving that:

• Learn vocabulary in context, not in isolation. Instead of memorising individual words, learn the phrases and examples in this article. Your brain retains information much better when it comes with context.
• Read environmental news in English. Media outlets such as The Guardian or the BBC constantly publish articles about climate change, sustainability and ecology. It is a natural way to see vocabulary in real use.
• Listen to podcasts or watch documentaries in English about nature and the environment. BBC series or National Geographic documentaries are excellent resources for reinforcing this vocabulary through listening.
• Practise by writing. Take one of the Speaking questions from the previous section and write a response paragraph using at least five new words or expressions from this article.
• Use the vocabulary out loud. Talking to yourself may seem strange, but it is one of the most effective techniques. Explain to yourself what the greenhouse effect is, what carbon footprint means or how to use the phrasal verb to phase out.
• Create vocabulary flashcards. Tools such as Anki or Quizlet allow you to create digital cards with the words from this article and revise them using spaced repetition, which is scientifically the most effective system for long-term memorisation.

Environmental vocabulary exercises in English

Below, you have three exercises to practise some of the environmental vocabulary in English that we have seen in this article.

In case you prefer to copy and transform the exercises, here are the same exercises in text format. 👇

Environment Vocabulary Exercises

Exercise 1: Fill in the following sentences with the words from the box.

1. The long period without rain caused a severe __________ in the region.
2. Many animals are losing their natural __________ because of urban expansion.
3. Rubbish that cannot be reused or recycled often ends up in __________ sites.
4. A thick layer of __________ hung over the city because of traffic and industrial pollution.
5. Untreated __________ was released into the river, creating a serious health risk.
6. Heavy rain caused a __________ that forced hundreds of residents to leave their homes.
7. One simple way to reduce household waste is through __________.
8. Scientists agree that __________ is making extreme weather events more frequent.
9. The national park was created to protect local __________.
10. The skier was rescued after being trapped by an __________ in the mountains.

Exercise 2: Fill in the following sentences with the words from the box.

1. Driving less and flying less can help reduce your __________.
2. The factory workers had to wear masks to avoid breathing in harmful __________.
3. Large areas of the Amazon __________ are under threat from illegal logging.
4. Solar and wind are two of the most common forms of __________.
5. Farmers are being encouraged to reduce their use of __________ to protect bees and other insects.
6. The company’s environmental plan focuses on long-term __________ rather than short-term profit.
7. The melting __________ is a clear sign of rising global temperatures.
8. The accident polluted the soil with __________ from the industrial plant.
9. Building hotels along the coast led to severe __________ in the area.
10. Some coastal countries are investing in __________ generated by the movement of the sea.

Exercise 3: Fill in the following sentences with the words from the box.

1. We should all __________ plastic packaging if we want to reduce waste.
2. Several species may __________ unless urgent action is taken to protect them.
3. As the oceans __________, marine ecosystems are changing dramatically.
4. In summer, these small snow patches usually __________ completely.
5. Many countries plan to __________ petrol and diesel cars over the next few decades.
6. If we continue wasting water, some areas could __________ fresh supplies.
7. We must stop trying to __________ the planet’s natural resources so quickly.
8. A single disease could __________ an entire population of rare plants.
9. Volunteers stayed behind after the festival to __________ the beach.
10. The campaign aims to __________ about the dangers of air pollution.

Answer key

Exercise 1

Key 1: 1. drought, 2. habitat, 3. landfill, 4. smog, 5. sewage, 6. flood, 7. recycling, 8. climate change, 9. wildlife, 10. avalanche

Exercise 2

Key 2: 1. carbon footprint, 2. fumes, 3. rainforest, 4. renewable energy, 5. pesticides, 6. sustainability, 7. glacier, 8. toxic chemicals, 9. deforestation, 10. wave power

Exercise 3

Key 3: 1. cut down on, 2. die out, 3. heat up, 4. melt away, 5. phase out, 6. run out of, 7. use up, 8. wipe out, 9. clean up, 10. raise awareness

Conclusion

As you have seen, environmental vocabulary in English is much richer and more varied than it may seem at first glance. It is not just about knowing how to say climate change or recycling: it is about being able to argue, debate and write about one of the most important topics of our time with precision and naturalness. Whether you are preparing for a Cambridge exam or simply want to improve your English, mastering this vocabulary will open many doors for you. Now you have all the tools you need — all that remains is to practise!

And until the next article, don’t forget to keep smiling!