TOEFL Vocabulary: What to Prepare for the New Test

The TOEFL iBT changed in January 2026, and study advice written before then may no longer match the test. That makes this a good moment to separate what is known from what is guessed. This guide sticks to what ETS, the organization that runs the test, has published, and then turns it into a vocabulary plan. For anything about format, timing or fees, check ETS directly, because those details can change again.

What the test measures

ETS describes the TOEFL iBT as measuring four skills: reading, listening, speaking and writing. It frames them as academic English skills of the kind used in a classroom. The point matters for preparation, because the test is not about ordering coffee or making small talk. It asks whether you can follow academic content, take part in academic discussion and write for an academic audience.

What changed in January 2026

ETS's page on the update lists several changes.

Reading and listening became adaptive. These two sections use what ETS calls a multistage adaptive format, which adjusts in real time midway through each section based on how you are doing.

New question types and content. ETS says new question types reflect collaborative academic settings, and the content includes group discussions and project work. It also says topics are designed to reduce cultural bias and improve fairness.

A new score scale. From January 2026 the test reports a 1 to 6 band scale aligned with the CEFR. During a two-year transition period, TOEFL also reports comparable 0 to 120 overall scores. What the CEFR is explains the levels behind the new scale.

Faster results. ETS says scores are delivered within 72 hours or less.

There were also changes to equipment and registration. The ETS pages used for this guide do not give the length of the test, the number of questions per section or the details of the speaking and writing tasks, so this guide does not either. If you read a figure for those elsewhere, check it against the ETS site before you rely on it.

What this means for vocabulary

Several things follow from what ETS has said, even without every detail.

Academic vocabulary stays central. The test is built around academic English, so the vocabulary of textbooks, lectures and seminars matters. That is a particular register: words such as analyze, hypothesis, evidence, significant, interpret, consequence and contrast appear across subjects far more than in casual speech.

Collaborative language matters more. With content described as group discussions and project work, you can expect language for agreeing, disagreeing politely, suggesting, clarifying and summarizing a group's view. Phrases such as I see your point, but, building on that, to clarify and so what we are saying is are worth knowing.

Breadth beats rarity. An adaptive section adjusts to how you are doing, so strong, reliable command of common academic words is more useful than a few rare words you half know. A wrong guess on an unfamiliar word costs more than a right guess gains.

Producing words matters in speaking and writing. Reading and listening reward recognition. Speaking and writing require you to produce words quickly and correctly. A word you can define when you see it, but cannot recall on demand, will not help in a spoken answer.

Academic vocabulary in practice

A well-known resource for academic vocabulary is the Academic Word List, published in a 2000 article in TESOL Quarterly. It collects word families that occur frequently across academic texts in many subjects, apart from the most common everyday words. What the Academic Word List is explains it and how to use it sensibly. It is one source among several, and it is not specific to TOEFL.

A good approach is to learn academic words in groups of related forms. If you learn analyze, also learn analysis, analyst and analytical. If you learn assume, learn assumption. Knowing how a word changes between verb, noun and adjective lets you use it in different sentences, and it helps in reading when you meet an unfamiliar form of a known word.

Campus language is worth a separate list. Student life has its own words: syllabus, prerequisite, deadline, extension, office hours, seminar, credit, enrol or enroll. They rarely appear in vocabulary lists for general English, and they are the sort of words that make a short conversation hard if you have never heard them.

A plan for the weeks before the test

Begin by checking where you stand. A practice test, or a short placement quiz for a rough starting level, shows whether vocabulary is the main gap or whether timing, grammar or organization is.

For the vocabulary part, spend about fifteen minutes a day. Spend five on review: test yourself on yesterday's words and last week's. Spend five on new words, in a topic group, with a sentence for each. Spend five using them, by writing two sentences or saying a thirty-second answer aloud. Space your reviews across days, because spaced repetition holds words better than one long session.

Once a week, record yourself answering a practice question on an academic topic, such as whether universities should require all students to take the same courses. Listen back and note one word you used wrongly and one you wanted but did not have. Add them to your list.

Read and listen to academic material at your level and slightly above it: university lecture recordings, long-form articles and open course materials. When a word interrupts you, guess from context first, then check.

Using the weeks well

If you have a long runway, spread the work. In the first weeks, build the base: common academic words in families, with collocations. In the middle weeks, add the language of discussion and project work, and begin recording yourself. In the last weeks, shift toward timed practice and review, since vocabulary you cannot retrieve quickly is not yet useful in a test. Keep a short running list of words that tripped you in practice, because those are the ones worth revisiting most often.

What not to do

Do not rely on a list that claims to contain the words that will appear on the test, because the content changes and is not published in advance. Do not memorize rare words you cannot use. And do not assume that advice written before January 2026 describes the current test. Check dates on any prep material you use.

How Wordabulary fits in

Wordabulary can support the vocabulary part of your preparation. Words are tagged by level, practice shows definitions and example sentences, quizzes include a typing format that asks you to produce words, and every word can be heard in British or American English. It is not a TOEFL course, does not predict your score and has no connection with ETS. Use it alongside practice tests and speaking and writing practice.