Welcome! If you are preparing for the IELTS or PTE exam, you have probably heard someone say, "You need to learn academic vocabulary." That advice is correct — but it can also feel incredibly frustrating. Where do you even start? How do you know which words matter most? And how are you supposed to remember hundreds of new words when you are already juggling speaking practice, writing tasks, and reading drills?

Take a deep breath. You are not alone in this, and you do not need to memorize a dictionary. The Academic Word List (AWL), developed by researcher Averil Coxhead at Victoria University of Wellington, contains 570 word families that appear frequently across academic texts. These are not rare, obscure words — they are the building blocks of university lectures, research papers, and exam passages. Today, we are going to focus on 100 of the most essential words from this list.

In this guide, you will find each word organized thematically so your brain can connect related ideas. We will cover definitions, useful collocations, and example sentences for key words in each group. By the end, you will have a practical vocabulary toolkit you can return to again and again during your preparation.

What Is the AWL and Why Does It Matter?

The AWL was created after analyzing academic texts from a wide range of university subjects — arts, law, science, business, and more. The words in this list make up a significant portion of the vocabulary you will encounter in IELTS Academic Reading passages, PTE Academic reading and listening tasks, and university-level writing.

According to official IELTS scoring criteria, vocabulary is assessed under the Lexical Resource criterion. This means examiners are looking at the range and precision of your word choices. Using academic vocabulary correctly can directly improve your band score in both writing and speaking. The PTE Academic exam similarly evaluates vocabulary through its enabling skills scoring, where word choice affects your marks in written discourse and oral fluency.

The key word here is correctly. Memorizing a word is not enough — you need to know how to use it in a sentence, what words it naturally pairs with (its collocations), and what part of speech it is. That is exactly what this guide will help you with.

How to Use This Guide

We have organized all 100 words into five thematic groups. Each group contains a table with every word's definition and a key collocation. For important words in each group, we have provided fuller explanations with pronunciation tips and carefully checked example sentences.

Tip: Do not try to learn all 100 words in one sitting. Focus on one group per study session, and come back to the others later. Spacing your learning over several days is one of the most effective ways to move words into your long-term memory.

Group 1: Research and Analysis

These words appear constantly in academic reading passages and are essential for both IELTS and PTE writing tasks.

Key Words in Focus

Assess /əˈses/ — This word is more formal than "check" or "look at." When you assess something, you carefully study it to form a judgment. Example: "It is important to assess the long-term effects of urban development on local communities."

Demonstrate /ˈdemənstreɪt/ — This means to clearly show that something is true. It is stronger than "show." Collocations include demonstrate a connection, demonstrate the ability, and clearly demonstrate. Example: "The study demonstrates that regular reading improves vocabulary retention."

Evidence /ˈevɪdəns/ — This is an uncountable noun, so you cannot say "evidences." Use: strong evidence, provide evidence, based on evidence, evidence suggests. Example: "There is strong evidence to support the claim that exercise reduces stress."

Group 2: Arguments and Persuasion

These words help you build and evaluate arguments — a critical skill for IELTS Writing Task 2 and PTE's Write Essay task.

Key Words in Focus

Contribute /kənˈtrɪbjuːt/ — Always followed by "to." Example: "Several factors contribute to the rise in childhood obesity." The noun form is contribution (countable): "She made a significant contribution to the field."

Significant /sɪɡˈnɪfɪkənt/ — This means "important" or "large enough to matter," not just "big." Collocations: significant impact, significant role, statistically significant. Example: "Climate change poses a significant threat to biodiversity." In academic writing, this word is far more precise than "important."

Perspective /pəˈspektɪv/ — A viewpoint or way of seeing something. Example: "From an economic perspective, immigration has both benefits and drawbacks." This word is extremely useful in Task 2 essays when presenting different sides of an argument.

Group 3: Change, Process, and Development

These words help you describe how things happen, change, or grow — essential for both academic reading comprehension and descriptive writing.

Key Words in Focus

Adapt /əˈdæpt/ — To adjust to new conditions. Collocations: adapt to, adapt successfully, adapt quickly. Example: "Students must adapt to different teaching styles when they enter university." Do not confuse with "adopt" (to take something on as your own).

Emerge /ɪˈmɜːdʒ/ — To come into view or become known. Example: "New evidence has emerged that challenges the original theory." This word is common in academic reading passages about research findings.

Establish /ɪˈstæblɪʃ/ — To set up or prove something. Example: "The purpose of the study was to establish a link between diet and academic performance." Note: "establish" is more formal than "show" or "find," so using it signals academic sophistication.

Group 4: Society, Law, and Policy

These words frequently appear in IELTS reading passages about social issues, government policy, and global trends.

Key Words in Focus

Occur /əˈkɜːr/ — A more formal alternative to "happen." Example: "Accidents are more likely to occur when drivers are distracted." A common spelling mistake is writing "occured" — the correct past tense is "occurred" with a double 'r'.

Proportion /prəˈpɔːrʃn/ — A part or share of a whole. Example: "A significant proportion of university students experience exam anxiety." This word is very common in IELTS Task 1 writing when describing charts and data.

Legislation /ˌledʒɪsˈleɪʃn/ — A formal word for law. Example: "The government introduced new legislation to reduce carbon emissions." Important grammar note: this word is uncountable. Say "a piece of legislation," not "a legislation."

Group 5: Academic Writing Essentials

These words are particularly useful for structuring essays and reports in both IELTS and PTE writing tasks.

Key Words in Focus

Context /ˈkɒntekst/ — The situation or background that helps you understand something. Example: "The meaning of a word often depends on the context in which it is used." This is a powerful word in both reading comprehension and writing, as it shows you understand nuance.

Hence /hens/ — A formal way to say "therefore" or "for this reason." Example: "The cost of living has risen sharply; hence, many families are struggling financially." Use it to connect ideas logically in your essays — it is particularly effective in conclusions.

Fundamental /ˌfʌndəˈmentl/ — Meaning "essential" or "basic." Example: "Access to clean water is a fundamental human need." Collocations include fundamental change, fundamental principle, and fundamentally important. This word signals to the examiner that you can use advanced adjectives with precision.

Common Mistakes to Avoid

Learning vocabulary is not just about knowing what a word means — it is about knowing how to use it correctly. Here are some frequent errors that can cost you marks.

1. Wrong preposition after the verb. Many academic verbs require specific prepositions. "Contribute to," not "contribute for." "Adapt to," not "adapt with." "Consist of," not "consist in." Getting these small words wrong can make even an advanced sentence sound unnatural.

2. Countable vs. uncountable confusion. "Evidence" is uncountable — say "a piece of evidence," not "an evidence." "Legislation" is also uncountable — say "a piece of legislation," not "a legislation." "Data" is technically plural (singular: "datum"), but most modern academic texts accept "data" with a singular verb.

3. Overusing "important" and "big." These are vague words that weaken your writing. Replace "important" with significant, crucial, or fundamental. Replace "big" with substantial, considerable, or major. This single habit can noticeably improve your Lexical Resource score.

4. Confusing similar-looking words. "Adapt" (to change) and "adopt" (to take on) look similar but have very different meanings. "Affect" (verb: to influence) and "effect" (noun: a result) are another pair that catches many students. If you know you mix up certain words, keep a personal "confusable words" list and review it regularly.

When Life Gets Busy: Micro-Learning Tips

You do not need hours of study time to build your vocabulary. Research suggests that short, frequent practice sessions are often more effective for vocabulary retention than long, infrequent ones. Here are some strategies that work even on your busiest days.

The 5-Minute Table Method. Pick one group from this article. Read through the table once. Close the article. Write down as many words and definitions as you can remember. Check your answers. This active recall technique strengthens memory far more than simply re-reading a list.

The Sentence Swap. Take one word each day and write three different sentences using it. For example, with "significant": The discovery was significant. There was a significant difference between the two groups. This is a significant step forward. Each sentence uses the word in a slightly different context, which deepens your understanding.

The Collocation Journal. Keep a small notebook or a note on your phone. Every time you encounter an academic word in a news article, textbook, or practice test, write down the full phrase it appeared in. Over time, you will build a personalized collocation bank that feels natural rather than memorized.

The One-Word Challenge. Each morning, choose one word from the list. Your task is to use it at least once during the day — in a text message, a conversation, or a journal entry. The goal is not perfection; it is making the word feel familiar.

Practice Exercise: Test Yourself

Before you finish, try this quick exercise. Fill in the blank with the correct word from the groups above.

1. The researchers aimed to __________ a connection between sleep quality and memory performance. (establish)
2. A large __________ of the population lives below the poverty line. (proportion)
3. The company decided to __________ heavily in renewable energy projects. (invest)
4. Students must __________ to new academic expectations when they enter university. (adapt)
5. The study provides strong __________ for this claim. (evidence)
6. From a legal __________, the policy is difficult to enforce. (perspective)
7. The cost of materials has increased; __________, prices for consumers have risen. (hence)
8. Access to education is a __________ right for all children. (fundamental)

Check your answers against the parenthetical answers. If you got six or more correct, you are already making solid progress. If you got fewer, do not worry — review the relevant group and try again tomorrow. Progress happens one session at a time.

Final Thoughts

Learning 100 new words might sound like a mountain to climb, but remember: you do not need to conquer it all at once. Every word you learn is a small victory, and those victories add up faster than you think. The students who succeed on IELTS and PTE are not the ones with the biggest vocabularies — they are the ones who use the words they know accurately and confidently.

Start with one group from this guide. Practice it for a few days. Then move to the next. Come back to this article whenever you need a refresher. You have the tools, you have the words, and you have everything you need to take your English to the next level. Keep going — your effort will absolutely pay off.